There's more to running than just putting one foot in front of the other, with a study suggesting that how you position your feet can make a big difference. Most people land their strides heel-first, which places increased stress on the knees. However, landing forefoot-first can increase the risk of ankle and tendon injuries. "There is, in other words, no one invariably right and painless way to run," Gretchen Reynolds writes.
Rethink your running style, researchers say