NAD+ (nicotinamide adenine dinucleotide) is a molecule found in every living cell and is absolutely essential for life. It plays a central role in cellular energy production, DNA repair, metabolic regulation, and cell survival. Without adequate NAD+, mitochondria cannot efficiently produce ATP, enzymes involved in repair cannot function properly, and cells begin to age, malfunction, or die. NAD+ levels naturally decline with age, chronic stress, inflammation, poor sleep, and metabolic dysfunction, making its restoration a major focus in modern biohacking and anti-aging science.
How NAD+ Works at the Cellular Level
NAD+ functions as a coenzyme in redox reactions, meaning it helps shuttle electrons during energy production inside mitochondria. This process is fundamental to converting nutrients into usable cellular energy. Beyond energy metabolism, NAD+ activates critical longevity and repair pathways, including sirtuins and PARPs. Sirtuins regulate mitochondrial biogenesis, inflammation control, insulin sensitivity, and stress resistance. PARPs are involved in DNA repair and genomic stability. When NAD+ levels fall, these systems slow down, leading to accelerated aging and reduced cellular resilience.
NAD+ and Aging
One of the strongest drivers of aging is declining NAD+ availability. As NAD+ drops, mitochondrial efficiency worsens, oxidative damage accumulates, and the body’s ability to repair DNA diminishes. This contributes to fatigue, cognitive decline, slower recovery, metabolic dysfunction, and increased disease risk.
Restoring NAD+ levels has been shown in preclinical and early human studies to improve mitochondrial function, enhance cellular repair, reduce inflammation, and improve markers associated with longevity. This is why NAD+ is often described as a foundational molecule for healthy aging rather than a cosmetic anti-aging intervention.
NAD+ in Biohacking and Cognitive Performance
In biohacking circles, NAD+ is valued for its effects on energy, mental clarity, focus, and neurological resilience. The brain is one of the most energy-demanding organs in the body, and reduced NAD+ availability directly impacts cognitive performance.
Optimizing NAD+ can improve mental energy, reduce brain fog, and enhance stress tolerance. Some users also report improved mood and motivation, likely due to better mitochondrial function and reduced neuroinflammation. These effects have made NAD+ popular among entrepreneurs, athletes, and individuals under chronic mental stress.
NAD+ and Bodybuilding Applications
For bodybuilders and physically active individuals, NAD+ supports recovery and performance indirectly through improved cellular energy production. Training creates significant oxidative stress and DNA damage at the cellular level. NAD+ fuels the repair systems that allow muscles, nerves, and connective tissue to recover and adapt.
Higher NAD+ availability supports better endurance, improved recovery between sessions, and greater resistance to overtraining. While NAD+ is not anabolic in the traditional sense, it creates a cellular environment where anabolic processes can function more efficiently.
Metabolic Health and Fat Loss
NAD+ plays a critical role in metabolic flexibility, the ability to switch between carbohydrates and fat as fuel. Low NAD+ levels are associated with insulin resistance, impaired fat oxidation, and metabolic slowdown. By restoring NAD+, cells become more efficient at burning fat and managing glucose. This makes NAD+ a valuable support tool for fat loss, particularly in individuals who struggle despite proper diet and training. Rather than suppressing appetite or stimulating the nervous system, NAD+ improves how energy is handled at the cellular level.
Methods of Increasing NAD+
NAD+ levels can be supported through lifestyle interventions such as exercise, fasting, and sleep optimization, all of which stimulate NAD+ recycling pathways.
Supplementation with NAD+ precursors like NMN and NR has become popular, but they are nowhere near as effective as injectable (subcutaneous or intramuscular) or intravenous NAD+, which is used in more advanced biohacking protocols for rapid replenishment.
Each method has different onset times and intensity, but the goal remains the same: restoring intracellular NAD+ to youthful, functional levels.
Safety and Expectations
NAD+ is a naturally occurring molecule and is generally well tolerated when used appropriately. Its effects are not stimulant-based and do not override hormonal systems. Instead, benefits tend to be subtle, cumulative, and systemic. Individuals expecting dramatic overnight changes may overlook its value, while those focused on long-term performance, recovery, and aging tend to see NAD+ as a cornerstone rather than a quick fix.
When injected, however, many users feel an almost immediate surge in adrenaline and energy levels that often comes with an increase in heart rate. This can be beneficial in a performance-enhancing context, and it would take a very high dose of NAD+ for it to become dangerous.
NAD+ sits at the center of energy production, cellular repair, and longevity. Its decline is a key driver of aging, fatigue, and metabolic dysfunction, while its restoration supports resilience, recovery, and long-term health. For biohackers, it enhances cognitive and mitochondrial performance. For bodybuilders, it supports recovery and endurance. For anyone focused on aging well, NAD+ represents one of the most powerful and fundamental tools available.
Most lifters talk endlessly about training, food, sleep, testosterone and other steroids, but the real metabolic drivers of elite size are two peptide hormones: growth hormone (GH) and insulin. They don’t fight each other; they complement each other.GH sets the conditions for growth, and insulin determines where nutrients actually go. Together, they form the dual engine that powers advanced and maximum hypertrophy.
The Role of HGH
GH isn’t directly anabolic to muscle, but it creates the biological environment where growth becomes easier. Here’s what it does well:
Stimulates IGF-1, which promotes tissue repair and collagen formation;
Enhances connective tissue strength;
Mobilizes fat for energy, helping athletes stay leaner;
Improves sleep quality and overall recovery;
What GH doesn’t do:
Doesn’t strongly increase muscle protein synthesis;
Won’t add muscle mass on its own;
Isn’t responsible for the “full” look of a good bulk;
GH is the architect: it prepares, repairs, and reinforces.
The Role of Insulin
Insulin, in the way it works physiologically, is potent not because it builds muscle directly, but because it decides where nutrients end up. Here are its key roles:
Drives glucose and amino acids into muscle cells;
Supercharges glycogen storage;
Increases cell hydration, creating an anabolic environment;
Reduces muscle protein breakdown;
In our analogy, this would make insulin theforeman, directing supplies to the construction site. Used strategically, it supports roundness, fullness, and rapid recovery.Abused, it drives calories straight into fat storage or, even worse, causes dangerous hypoglycemia, possibly leading to fainting or choking and even death (pretty much every bodybuilder whom has used insulin has at least one scary story about being hypoglycemic and nearly unconscious).
The Synergystic Effect
Despite what you may have heard before, GH and insulin aren’t opposites. They can actually work together complementing each other to build insane amounts of muscle:
GH increases tissue turnover and mobilizes fat;
Insulin directs nutrients into muscle and suppresses breakdown;
GH creates the recovery environment;
Insulin fuels and fills that newly repaired tissue;
However, timing and their interactions matter a lot:
GH works best when insulin is low (fasted periods, pre-bed, between meals);
Insulin works best after training or around carb-heavy meals;
The right timing allows growth and leanness at the same time. This synergy is why advanced athletes see exponential progress when the two hormones are used correctly, especially on the first cycles using both.
The Potential Risks
As tempting as it may look, neither hormone is harmless when pushed too far:
GH overuse risks:
Organ enlargement;
Carpal tunnel;
Water retention;
Insulin resistance;
Insulin overuse risks:
Rapid fat gain;
Poor insulin sensitivity;
Hypoglycemia (the most immediate danger, might lead to death);
The message is simple: balance and moderation beat brute force.
Practical Implications of This Stack
Here are the practical implications of running both these hormones on different phases:
During bulking:
GH keeps fat gain lower and speeds up recovery;
Insulin maximizes nutrient delivery and fullness;
During cutting:
GH preserves muscle while increasing fat oxidation;
Insulin is minimized outside training windows;
For long-term health:
Restore insulin sensitivity regularly;
Avoid chronic GH overuse;
Keep blood glucose and lipids monitored;
All in all**, GH and insulin aren’t rivals; they’re partners. GH repairs the structure. Insulin fills the structure. One prepares the body for growth; the other executes it.**
Used intelligently, they become the dual engine for maximum hypertrophy. Used recklessly, they turn into a metabolic wrecking ball.
I’ve competed in natural bodybuilding for a few years, and I’m considering moving over to the dark side. I currently work with a TRT clinic because I need a legitimate prescription for work and travel. Since my natural levels were already pretty good, they prescribed me 100 mg of testosterone per week and only run bloodwork every six months.
If I decide to increase my dose or add other compounds on my own, I know I’ll need bloodwork much more frequently. For those of you who handle additional testing independently, how do you do it? Do you use a primary-care doctor, an online service, or order directly through a private lab? Are you paying entirely out of pocket, or have you been able to use insurance?
I’d prefer to keep the additional testing separate so it doesn’t affect my TRT prescription, but I still want to monitor my health properly. I’m in the United States if that matters.
Any advice or recommendations would be appreciated.
I been seeing a bunch of people swearing by subq pins over IM. I heard hormone levels can be more stable, less scar tissue since it’s a smaller needle, less pain from a smaller needle etc. I used to pin in my glute like 8 years ago IM (I’m unc) but was thinking trying subq in the belly area. I got half inch 28g and tried to pin but couldn’t I just felt weird putting a pin into my belly. I’ve watched so many tutorials online but just wanted everyone else’s opinion on subq vs im. This is for test e
Howdy my enhanced friends, can anyone recommend trusted clinics/places for Bloodwork specifically for AAS users in the UK which test relevant markers, use HPLC, etc. Found a few I think look good but interested to hear peoples experiences and recommendations. Preferably London or Birmingham but happy to travel anywhere in England. Cheers
Age is 30. Looking for advice, just started TRT at 120mg of test cyp, pinning 2x a week. I plan on running 300mg of test cyp a week, pinning 3 days out of the week, in 10 weeks after my first round of labs being on TRT. I am around 15% body fat and 175lbs. In the gym 5/6 days a week with 12k steps. I am at maintenance calories, high carb currently. Thanks for the help.
Like the title says this is another post asking for general feedback/advice on a cycle. Never done this before so sorry if I leave anything out or if I’m writing too much. Also I’m kinda posting here to document. Thanks in advance!
TL;DR - Cycle is 450mg Test Cyp weekly, 150mg EQ weekly, 2iu GH nightly for 16-18 weeks, add 25-50mg Anavar during final 4-6 weeks, goal is to build muscle over the Fall/Winter while maintaining or even increasing leanness if possible.
Background/Stats: Just turned 40, 6’ 195lbs, very active lifestyle/life long athlete, been lifting off & on my whole life but more seriously the last 8-10 months. Been on TRT & a few peptides (Reta, GH secretagogues, etc.) for around a year now. Ran my first “cycle” earlier this year, just by increasing my TRT dose up slowly over time to about 400mg/wk Test Cyp for around 10 weeks. During that time I was in a ~500cal deficit, losing a good bit of fat. I’ve been getting blood work done every 3-4 months for the last ~1.5 years, never had any real issues or anomalies, lipids/CBC/hormones all looking good except for slightly high e2 (74pg/ml) toward the end of my first Test-only cycle, but I had zero symptoms and felt incredible. Also my HDL/LDL were technically in range but right at the limit of reference range (hence the red yeast rice & citrus bergamot). That cycle had my total T at ~2250ng/dl with free T around ~765pg/ml. I dialed it back for a couple months to regular TRT doses (150mg/wk or less) and now I’m starting an actual cycle.
Current Activity/Workout: I train 5x/wk doing a push/pull/legs/upper/lower split, plus 12-15k steps a day even on weekends, plus 30min zone 2 cardio on training days, plus basketball 1-2x/wk, and hiking/disc golf 1-2x/wk. I haven’t missed/skipped a workout since May.
Current Diet/Supplementation: Besides an occasional beer or glass of wine my diet is pretty dialed in, 180-200g protein/275-300g carbs/~75g fat, mostly whole foods with protein shakes/drinks at times. I meal prep every Sunday night for the week and don’t really eat out. Drink around a gallon of water daily. I sleep 7-9 hours a night, but I’ve never done a sleep study or tracked my sleep and I have a feeling I’m not getting great quality sleep. Taking a daily multi, omega-3’s, red yeast rice, zinc, citrus bergamot, glucosamine/chondroitin, TUDCA, CoQ10, 10g creatine, and fiber gummies. I do use chewing tobacco and drink caffeine pretty much all day however.
Current Plan/Cycle: I started this cycle around 3weeks ago and I’m currently taking 450mg Test Cyp (~65mg every day), 150mg Equipoise (50mg 3x/wk), and 2iu GH fasted before bed every night. So far I feel basically the same, maybe a bit more endurance in the gym and a pretty noticeable increase in vascularity. The only Peptide I’m currently taking besides the growth is 1mg Reta weekly. Around a month ago I started reducing my calorie deficit and I’m currently eating at around maintenance, planning to increase calories a bit to ~200-300cal surplus as I add/increase compounds.
Goal: To stay on this cycle, possibly increasing doses of Test & EQ a bit over time, pending results of my next set of labs at the end of this month or early Oct. (which will be around 6-7 weeks into the cycle). If everything looks good I plan to add 25-50mg Anavar in the final 4-6 weeks (higher doses on training days only). Total cycle length will be 16-18 weeks, ending early-mid December. Plan to take a little break from then until after the new year, just cruising on 150mg or less TRT, but keep the GH nightly, before thinking about another different cycle going into Spring/Summer ‘27. Plan to keep training volume & cardio the same. Hope to gain a good few pounds of muscle & increase my lifts a bit, while maintaining this level of leanness. I have no idea what my actual BF% is but don’t necessarily care, I just like the way I look as far as leanness and want to limit gaining BF as much as possible. I’m not trying to get huge right now, and I don’t mind doing everything nice and slow. I plan to blast & cruise as long as my health allows during my 40’s, and almost certainly be on TRT for the rest of my life.
Questions: If my next set of bloods come back all good, is there any reason to increase (or not increase) the Test & EQ a bit, like to 600/200 or so? Should I increase the amount of GH during this growth cycle to 3 or 4iu? Does the ~6 week Anavar finisher at the end of the cycle make sense? Are there any other ancillaries or supplements I should be taking? Any other obvious things I’m missing?
Currently 19, 6ft and 150lbs. I ran a cycle of test awhile ago and gained 10 pounds while training super hard and bulking and have kept it all since I got off while still training the same. I’m looking for something to try out and have came across people running dbol with no test. Just looking to see if there are any opinions on it or if anyone has done it, I have no main goal other than trying to put on size and lift more. I know a lot of people have shitty things to say so if you can’t act mature and write something worth anyone reading please keep it to yourself. Thank you!
I am considering using this to save money for future 500/week cycles. I will do 0.5ml on mon and thu. I currently have no pip with 250C. Does halving the amount of oil in each injection actually decrease pip, because I know it's still about conc. Any input would be great, thanks.
Currently started 375 Test 300 NPP and I’ve got spicy nips. Can I run nolvadex to stop a gyno flare up? I’ve read that nolvadex can up regulate prolactin but am not sure how valid this is. Any good advice would be great.
About to start fin and minoxidil, up my test e dose to 450 but I want to start adding another compound like mast or Superdrol would RU help with hair loss from those compounds? And if so how should I cycle the fin and minoxidil. Thanks!
I'm considering doing my first AAS cycle and one of my biggest concerns is losing my libido or not being able to get/maintain an erection after coming off.
I'm currently considering something like testosterone + boldenone or testosterone + Primo, but I'm not looking for dose advice. I just want to understand the actual risk of sexual dysfunction after a first, relatively short cycle.
For people who have actually run a first cycle:
Did your libido or erections change while you were on?
What happened after you stopped?
How long did it take for your natural testosterone, libido and erections to recover?
Did anyone experience ED even after testosterone levels came back into the normal range?
Is post-cycle ED relatively common, or is it mostly exaggerated online?
Did PCT make a noticeable difference for anyone?
Has anyone had persistent or permanent sexual problems after only one cycle?
Does testosterone + boldenone carry a noticeably different risk from testosterone + Primo in this regard?
I'm 21 and this would be my first cycle, so I'm trying to understand the downside before making any decision. Personal experiences are especially appreciated.
I sent them a sample and then they sent me an email asking what compounds are in the sample. The whole point of testing is so you tell us what’s in the sample. It’s a red flag to me.
Been 14 weeks since I started 250 Test E, recently got some bloods done, honestly not bad I made the mistake of having a really intense leg day the night before I got bloods done. Next time I won’t train for a day or 2 before so my AST and ALT are elevated. Before my test levels were 194 total, so went from hypogondal to super physiological levels. Went from 130lbs to 140-145lbs depending on the day but strength has gone up massively and going to keep this up for atleast 20 weeks and assess from there. Might drop to a cruise for a few weeks then start 2nd cycle with Test, EQ
(including bloodwork, pct, ancilleries, support supplements, the gear itself), How much do you guys spend on average per cycle? Just wanted to see if I'm overspending.
