The Best Cross-Training Moves for Trail Runners

Single-Leg Squats

Wilcock points to single-leg squats as a go-to move for bullet-proofing your knees while increasing stability. But since single-leg squats are tough, and require both good hip mobility and leg strength, Wilcock starts his clients with a single-leg squat to a box or bench, then provides other bodyweight-based modifications to gradually build up to an unassisted single-leg squat. Start by doing two to three sets per leg of eight to 12 repetitions.