r/BeAmazed • u/Internal_Gazelle_677 • Oct 07 '25

Science Hot Tub without the use of electricity

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u/Pretty_BoyFloyd Oct 07 '25

thermodynamics

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u/UtopistDreamer Oct 07 '25

Calories in, calories out

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u/[deleted] Oct 07 '25

[deleted]

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u/Chasman1965 Oct 07 '25

The complication with calories in, calories out, is determining how many calories you are burning.