Workout

He was at the point of exhaustion where lathering shampoo into his hair made his biceps tire and swell. At first this worried him, but being a pragmatic man he saw an opportunity. By being fatigued he could avoid going to the gym, for washing his hair provided all the muscular duress he required. Friends would come for workout advice and he'd say to them with a smirk, "lather, rinse, and repeat. Six sets of five."