I’ve noticed this mysterious gain myself. usually around 500g(1 pound or less)by midworkout. Water I figure the body is using as fast as I take it. I’m no expert but my guess is oxygenated blood.
That’s an interesting thought. Thanks for actually staying on topic. I knew someone was capable.
OK, so since O2 weighs 0.098lbs per cubic foot, and you are increasing weight by approx 1 lb, you would need to be absorbing over 100 cubic feet of O2 into your bloodstream.
Which seems like a lot, lol.
Now, since the value of 0.098 occurs (I assume) at 1 atmosphere of pressure, and since you actually dissolve O2 molecules into the blood, rather than carrying them around like ‘mini bubbles’, you could feasibly increase the weight of O2 in the blood as partial pressure of O2 increases to keep up with metabolic demand.
Plus you’ll be increasing partial pressure of CO2 as a metabolic byproduct. BUT you’ll also be excreting that CO2, just as rapidly as you intake O2…
Lol flexing those mental muscles eh?