if u are out in the sun, ur mitochondria will harvest more energy from the sun thru melanin, and consequently need fewer calories thru food; i call it being "photoelectrically efficient;" if u walk in the cold shirtless under the sun, that's even better;

SHA256man

Stacker Saloon

saloon

I find all of nothing things easier to do. Meaning, not eating is easier than eating less for me. I’m also fat and that makes fasting much easier. I started fasting intuitively in high school, but rediscovered it when keto became a thing.

I’d drink water and black coffee. I’d walk for an hour or so a day then, but wasn’t otherwise intentional about sun. During the 14 day I trained BJJ on my regular schedule.