Muscle Health Guide: Stretches, Vitamins & Recovery Tips

Optimal muscle health depends on consistent stretching, essential vitamins for tendons, and effective recovery from soreness. Learn the best PNF techniques and stretches for major muscle groups to prevent injury and loss of tone.

How to Exercise the Masseter Muscle

Published Aug,14 2017 | By Max Whitmore

You couldn't open or close your mouth without your masseter muscles. Imbalances or tightness of the masseter on each side of your jaw can contribute to temporo-mandibular joint, or TMJ disorder. Characterized by pain, stiffness and clicking in your jaw, TMJ can cause headaches and neck pain.