Peter Attia switched to an upper body/lower body lifting split nine months prior, performing lower body exercises on Mondays and Fridays, and upper body exercises on Wednesdays and Sundays.

“from a lifting standpoint it's monday wednesday friday sunday is lifting and about i don't know nine months ago i switched to an upper body lower body split i used to lift three days a week and do upper body lower body every day so each day i was doing kind of pushing pulling and hip hinging and now the lower body component i think is monday friday the upper body is wednesday sunday”