This routine strengthens the core plus the hip flexors, hamstrings and quads and improves balance.
Do these moves, working up to three sets of ten reps, after easy runs – when you wouldn’t want to lie down anyway.
Single Leg Squat
Stand on your right leg with your left knee bent.
Lower your body as far as possible with good control.
Keep your right knee in line with your toes as you lower.
Repeat sets on both sides.
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