Your body contracts the muscles that focus your eyes about 100,000 times from sunup to sundown. If you wanted to give your legs an equivalent workout it would require walking at least 50 miles every day.
 | The drawbacks of High Intensity Interval Training (HIIT) |
 | 20 Priceless Moments On The Road To Fitness |
 | How Long Before Bedtime Should I Have My Last Coffee? |
 | Can Running Pull Rib Muscles? |
