Fitness

Stacked bar chart from the SURMOUNT-1 DEXA body-composition substudy: on a GLP-1 (tirzepatide) 26% of weight lost was lean mass and 74% was fat, nearly identical to placebo's 25% lean and 75% fat

GLP-1 Muscle Loss Scared Me Into the Gym. The Fear Was Overblown.

Gunnar / July 4, 2026

The GLP-1 muscle loss panic scared me into training at 50. It turned out overblown, but the habit stuck. What the evidence actually says about muscle, and why you train after 50.

Bell curve of male fat-free mass index: most men cluster near FFMI 19, the author sits at 22, and the natural ceiling is about 25

Fitness, Strength & Rebuild

I’m in the Best Shape of My Life, and the Internet Still Makes Me Feel Like I’m Losing

Gunnar / June 3, 2026

After losing 170 pounds and getting into the best shape of my life, I still felt behind. The problem was not my body. It was the scoreboard.

My garage gym, where I train five days a week

Fitness, Strength & Rebuild

How I Started Lifting at 50 After 30 Years of Doing Nothing

Gunnar / May 31, 2026

I started lifting at 50 after thirty years of nothing: the dumbbells in my office, the gym that scared me off, the coach who made it stick, and what the evidence says a beginner actually needs.