The Harvard Alumni Study, one of the biggest scientific studies to date, found that men who climbed an average of eight or more flights of stairs a day had a 33% lower mortality rate than men who were sedentary. That’s considerably better than the 22% lower death rate observed in men who walked 1.3 miles a day.
The latest exercise guidelines for Americans say adults need at least 2 ½ hours to five hours a week of moderate intensity exercise; or 1 hour, 15 minutes to 2 ½ hours of intense activity every week. *intense exercise: 120 mins divided by 7 = 17 mins day