Last week, we looked at Tips 1 through 7 to improve your running, the undisputed King of cardio. We ended with wearing the right shoes. This week, let’s focus on Tips 8 through 15.

8. Arms: Try not to clench your fists. If you run with your fists up by your chest, considering lowering them so your fingers graze your waistline instead. This will save energy over the course of your run. Resist swinging your arms side to side. Think about gently punching your elbows straight back behind you as you stride forward.