Tight Hamstrings or Short Hamstrings: Why are they a problem? Many people have short hamstrings, the main muscle group in the back of the thigh
What is a lumbar disc bulge? disc herniation? disc prolapse? Disc injuries are one of the most common causes of back pain. Recovery often takes longer than with other types of back pain. The pain is usually worsened by prolonged sitting, bending, or simply staying in any one position for too long.