Our bodies are designed to move easily over distances using our legs as long levers. The joints enable flexible movement such as running, jumping, dancing and yoga. The legs house some of the largest muscle groups in the body that cross over a series of joints at the hip, knee, ankle, and foot. When any of these muscles and joints along the chain within the lower limb do not move as designed, and move in compensatory ways, the lower limb is predisposed to injury. Read on for exercises you can do to safely strengthen your legs.