A tingling forefinger and thumb can be symptoms of carpal tunnel syndrome, a condition that affects the median nerve that runs through your hand and forearm. Carpal tunnel syndrome can worsen without treatment, hampering your ability to work and participate in sports or hobbies.

Hyperextension of the knee can result in injuries that cause pain in the back of the knee, or posterior knee pain. Pressure that forces the knee backward beyond its normal position results in knee hypertension, which can damage the cartilage, ligaments and other parts of the knee.

A good exercise program helps patients with spinal stenosis slow the progress of the disorder. For many, spinal stenosis is acquired from or worsened by other medical conditions such as osteoporosis.

You may think that having a broken leg puts a stop to your fitness, but you don't have to lose hard-earned muscle and endurance due to an injury. You can still perform a variety of cardio, strength-training and flexibility exercises that will keep your body strong and prevent muscle loss during recovery.

Carpal Tunnel Syndrome is irritation of the median nerve as it passes into the wrist. It can have several different causes. Symptoms include pain, tingling, numbness, and weakness in the part of the hand supplied by the median nerve. CTS may respond well to massage therapy depending on the underlying factors.

Muscle cramping can feel as if your muscle is tightening involuntarily. This often-painful condition can result from extreme muscle fatigue or lost minerals in the body that affect your muscle functions. Muscle cramps are most common in the calf muscle, back of the thigh and front of the thigh.

Throbbing thigh pain can emerge from the knee, hip or back. The origin of the problem could be related to the muscles, bones or nerves in the legs. Throbbing can be dull or so severe that a person may find it difficult to stand or walk.

Whether you're doing it for exercise or for more practical reasons, climbing stairs is a good cardiovascular activity. It's great for toning leg muscles and getting your heart pumping. Some people may find that they experience a headache after climbing stairs. In most cases, this is of little concern.

The kneecap, or patella, is the bone that protects your knee joint. The kneecap is susceptible to many fractures and accounts for 1 percent of all broken bones. Rehabilitation for a broken kneecap can only begin after establishing the type of fracture and treatment options used.

Even a mild muscle pull, tear or strain can cause enough pain to make you search for a soft spot on the couch. How long you occupy that comfy spot will depend on what muscle was injured and the grade of injury -- the higher your grade, the longer the rehabilitation period.

Although sprinting is an activity that can provide you with health benefits, it is also intense enough to trigger injuries. If you feel pain in your quadriceps, it could be the result of a potentially serious injury. For this reason, you should stop exercising immediately if you feel any pain.

Exercise often causes soreness in your bones and muscles, especially when you've started a new exercise. When bones see increased amounts of stress, your body responds by building more bone mass in the area, ultimately strengthening the bone.