Twyla Tharp is tougher than you. Lifts weights 2hrs/day at 5am, 7 days/week for 50+ years, deadlifts > 200lbs (>2X her BW), then dance, choreography, other work rest of day. Eats no sugar, no starches. 84 and sharp as a tack. Twyla Tharp on the Huberman Lab podcast out now: