When hamstring tendons are strained or torn, they can really wreak havoc on not only your workout or athletic performance, but also on your everyday life.

If you feel a knot in your hamstring after an injury, you might have a severe tear in your muscle and need medical attention.

Tenderness and pain in your quads could be due to an injury, DOMS or, in rare cases, a serious medical condition.

Cardio exercise can sometimes leave ankles feeling achy. The most common culprit being the wrong shoes.

Sitting all day endangers your health, and that includes affecting your leg muscles. Take regular breaks to move around.

Releive pain in your thighs by stretching your quadriceps, hamstrings, adductor and abductor muscles.

A mild quadriceps pull can be treated with rest, ice, compression and elevation; a more serious pull may require medical attnetion.

Bone diseases affect tens of millions of people in the US. Osteoporosis is the most common bone disorder.

A rib muscle injury can be more difficult to treat than a pulled muscle in other areas. There are [three layers of muscles](http://www.dartmouth.edu/~humananatomy/part_4/chapter_20.html) located between each rib -- the external intercostal muscles, internal intercostal muscles, and innermost intercostal muscles.

The biceps muscle tendons can tear at the shoulder or, less commonly, the elbow. Treatment depends on the location and extent of the tear, and other factors.

The tiny piriformis muscle can be a big pain in the rear end, particularly if it affects the sciatic nerve.

A combination of cardio, yoga and strength-training will take your legs from weak to muscular in no time.