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