How long does it take to lose muscle? The science of detraining
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Jan 17, 2026 · 11 min read
Taking a break from the gym can cause anxiety about shrinking biceps and lost strength. The clinical reality is that true muscle loss takes longer than you think, provided your hormones and nutrition remain dialled in. “Many men panic when they miss a week of training, assuming their gains will vanish overnight. The reality is ...