Perform the move slowly at first, then speed up as you perfect your form. Improper form can cause unnecessary stress on the low back, make you feel unstable, or make the move ineffective.

There is no perfect running form or body. “Don’t stress if you look at a picture of yourself and you don’t look like an Olympian,” Accetta said. Genetics and habits mean everyone is different.

Altering your running form can also change the load on your body, increasing your injury risk, especially if your muscles and tendons haven’t adapted to handle the new stress, Dr. Moore said.

Running with a stroller reduces leg impact, but increases harmful twisting forces, researchers found. Here's how parents can run safely with children in jogging strollers.