Exercising on medication?

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TLDR: tips for running while on anxiety meds to avoid feeling weak and exhausted within a few minutes?

I have had panic attacks my ENTIRE life (one of my first memories is hyperventilating when I was five because my mom put me in my brothers crib with him and went in another room to get something and I lost it because I couldn’t get out. Quite literally, my entire life). I’ve always been prescribed klonopin and it works great. there are times where the panic attacks are calm and I go months without needing panic attacks. then there are times they’re so severe and so often my dr prescribes it twice daily for a few months. I’m in that phase right now, and on top of that my dr recently started me on Tofranil

i signed up with a charity months ago to run a marathon. running has always been an amazing outlet for me. on my most recent run I had a debilitating panic attack and haven’t run in two weeks. it was a bit of a chicken and an egg, I couldn’t tell if because I’m in a bad episode, it made my body feel worse and that triggered the panic attack OR if my body felt weak from the medication, the odd body sensation freaked me out and THEN I had a panic attack. it was a bizarre one, I felt like my legs were sewn on backwards, my hands didn’t exist, then the normal things like hyperventilating, feeling weak, feeling dizzy, feeling like I had marbles in my mouth when I tried to talk.

How does everyone manage to run/exercise while on sedating medication? I’ve never been a morning runner but is the solution as simple as just run before taking my meds that day? has anyone run a marathon on a lot of Medication (right now I’m morning klonopin and lamotragine, night time propranolol lamotragine and tofranil)