Most runners need more muscle mass, or strength and control in the muscle mass they have to boost their performance.
Most runners need more muscle mass, or strength and control in the muscle mass they have to boost their performance.
Unlock your flexibility with this powerful yoga hip & hamstring stretch, to deeply open your hips, stretch tight hamstrings, ...
Press your heels into the chair. You should feel your sit bones draw together and your lower abdominal muscles engage.