Apparently Swinging Your Arms While Running Isn’t Necessary

New research might change the way you run!

A study at Southern Methodist University found that swinging your arms while you run isn’t really necessary. Researchers timed athletes while they ran 30-meter sprints, which is about 100 feet. They had them run like normal, and then again with their arms crossed in front of them and it did make a difference, but just barely. They ran 0.08 seconds slower with their arms crossed, or less than 2% slower. The researchers were surprised, because the common assumption is that swinging your arms acts as a counterbalance, and helps you pump your legs harder.