Peter Attia· MD
there's some really fascinating studies on Backcountry Hunters who will carry in loads you know into deep into the mountains and they'll test their body fat before and after and those Hunters across I think it was a 10day study was a small study there's you know there's only so many weirdos like that uh they lost 14% of their body fat and they actually stayed with same amount of muscle some actually gained like an oun or to a muscle