See the squat rep benchmarks after 55, how to squat with clean form, and the best tips to build lower-body endurance.

Build muscle after 40 with 5 classic moves: squat, deadlift, push-up, row, overhead press, plus sets, reps, and cues.

Erin Banks said he's seen major leg muscle gains by incorporating hack squats into his lower body workouts to work his quads instead of his core.