Inner thigh muscles can get tight -- especially if you sit a lot during the day. Stretches improve flexibility in these adductor muscles.

The gluteal muscles work together daily to propel your body forward, backward and side to side while maintaining your balance.

Tailbone pain can disrupt just about every aspect of your life. Stretches can help relieve your symptoms.

Short leg heredity is a rare condition known as hypochondroplasia. This skeletal deviation can lead to lower back pain due to sway back or spinal stenosis.

Stiff legs make you uncomfortable and can inhibit your movement. Use movement and stretching to ease the sensation.

Knees that lock out are vulnerable to injury. Use proper form when exercising and build strength and flexibility in your legs to protect the joint.

Muscle stiffness can be relieved through a routine of stretching, increased bloodflow, and nutrition, along with lower exercise intensity.

Hamstring cramps hurt and can halt your activity. Know what to do when your muscle cramps so you can get back in the game.

Your nerves travel through your spinal column and then out to various areas of the body. Arthritis and disc problems can cause a narrowing of the spinal column, which can compress your nerves. This narrowing of the spinal column is called spinal stenosis.

Tendons are tough, fibrous tissues that connect your muscles to the bones within your body. If a tendon is overused or overstretched during physical activity, the tendon can tear--a condition known as a ruptured tendon. Contact your doctor for further evaluation if you develop symptoms of torn tendons.

Running causes repeated stress to be placed on the bones and tissues in your feet and legs. Over time, injuries such as stress fractures can result. As a tiny break in a bone, stress fractures are painful but do not always cause disability or immobility.

The muscular system works with the bones to produce a wide range of movement but also plays an important role in breathing, digestion and the circulatory system. Preserve the function of the muscular system system by developing habits that reduce muscle stress and improve muscle function and strength.