A recent study published in the journal Physiology & Behavior reported that easy stair walking reduced fatigue better than caffeine. Study coauthor Patrick O'Connor, Ph.D. stated that participants in the stair group felt "more energetic and vigorous" compared to the other study groups who received caffeine or a placebo.
Walking stairs for only ten minutes helped boost energy levels. Even "a short walk up and down stairs seems to make workers feel more motivated and refreshed", says O'Connor.
So if you get the "afternoon sleepies" from inadequate sleep or a big lunch, try the stairs instead of a cup of Joe. Good for your heart. Good for your head!