Runner's World reports on calf cramps and how to prevent them as a runner. Jordan D. Metzl, MD, primary care sports medicine physician at HSS, explains that while there are a lot of reasons to feel calf pain, cramps typically happen when the muscles in the posterior chain aren't strong enough so they go into a spasm if pushed too hard.

'At the start of a run, your muscle isn't warmed up, and at the end, changes are it's fatigued," said Dr. Metzl. 

If the pain feels serious, Dr. Metzl recommended pulling over and stretching it out with stretches such as a downward dog, a lunging calf stretch, or standing bent-over toe touches.

Read the full article at RunnersWorld.com.