Fascia is a band or sheet of connective tissue, primarily collagen, beneath the skin that attaches, stabilizes, encloses, and separates muscles and other internal organs. Fascia is classified by layer, as superficial fascia, deep fascia, and visceral or parietal fascia...
Your core muscles are rarely the primary movers in athletic performance. Despite their "complementary" role, they can be extremely important in how effectively you express strength. These muscles stabilize the whole torso and allow you to efficiently transfer force produced in an athletic movement. Unfortunately, the lower back (one muscle group of the core) is often neglected. This is in contrast to abdominal muscles, which people will often target significantly more than the lower back. If you want a strong/balanced core, give these lower back exercises and stretches a shot! We're sure you'll see massive improvements in your overall performance!
The hip flexors are a group of five muscles that connect the femur (or thigh bone) to the pelvis, they are located near the top of your thighs that are key players in moving your lower body.
They are responsible for walking, kicking, bending, and swiveling your hips. Movement, your hip flexors can stretch or tear. A hip flexor strain can be mildly uncomfortable or so severe that you have trouble walking