If you own a treadmill, it's time to hop on it. If you don't have one, then head to the nearest gym, because it's time to exercise! According to Self, here are some tips to keep in mind as you do your workout:
1. Focus on Your Arm Swings
The way you swing your arm actually matters. “Interval training on a treadmill with a strong straight front-to-back arm swing (rather than swinging arms side to side across the centerline) stabilizes your hips, preventing long-term injury."