Watched many a fellow NJROTC an USNA midshipmen go down during P-rades. Hot, cold, didn’t matter. For them it was all about locking their knees and cutting off circulation.
Only time I almost passed out was actually at an easter performance at church once - I’ve since linked that back to eating carbs at breakfast without protein. ANY time I do that since I was a teen, I break out in a sweat, get dizzy, and if I don’t lay down quickly then I WILL pass out. Docs say I’m hypoglycemic but NOT diabetic - as long as I eat more protein then carbs, I’m fine....doesn’t bother me at all if it’s past noon.
Uhhh, phrasing. ("Seaman Kamala Harris" is going down!")