Tight hip flexors, especially a deep muscle called the psoas, can silently stress your spine. Here's why this muscle deserves ...

If you’re a runner, you may warm up with some dynamic hamstring stretches and reward your glutes and quads with a little foam rolling action when ... a core group of muscles used when running ...

Muscles are attached to bones by tendons ... the biceps are the agonist and they contract eccentrically to control the flexion of the elbow so the body is lowered under control down towards ...

Deltoid Abduction of the shoulder (moving the arm outwards and away from the body) Outward arm action in a jumping jack Rotator cuffs A group of stabilising muscles of the shoulder which helps to ...