| Poor training routines can contribute to soft tissue injuries such as those to Achilles tendons, hamstrings and calf and adductor muscles. |
| A common sprain injury is a torn Achilles tendon, which connects the calf muscles to the heel. |
| Lower your heels at a slow to moderate speed until you feel a strong stretch in your Achilles tendons and calf muscles. |
| Ankle and ligament damage is also common, as well as Achilles tendon rupture and calf tendon tears. |
| Think of a runner with tight calf muscles and a tight Achilles tendon running up a hill. |
| The usual source is the lining of the fourth stomach of a calf, though other young animals may be used. |
