Too much or too little activity can increase risk of muscle cramps. Instead, get into the habit of moving the body regularly but within a healthy intensity range, so it has time to adapt. iSTOCK Too ...

Dear Doctors: I get a cramp in my left calf when I run for more than 20 minutes. When I slow down, it goes away. I told my doctor about it, and she wants to do something called an ankle brachial index ...