These 10 active stretches from physical therapist Gerard Hatmann are the essentials every runner needs to keep healthy and efficient.

since it maximally stretches the hip flexor area as well as the thigh. The active muscle contraction (when you contract your butt) also makes a difference: "This active component is key as active ...

The femoral head is a ball-shaped bone at the top of the thigh bone. It sits in the acetabulum, which is a socket in the pelvis. The following muscles ... It occurs due to stretching, compression ...