2 p.m.-4 p.m.
1. Take a nap.
A little shut-eye can go a long way in preventing a midday crash. There's also evidence to show that a short nap can boost productivity, helping you get more work done when you return to your desk. If you can't get upper management to go for naptime, take 10-15 minutes during the afternoon to get away from your computer (and other electronics—including your phone) and meditate.
Rather than bingeing on office doughnuts, opt for a snack that is high in protein and lower in carbohydrates. The lower-carb count will help to keep your blood sugar in check and prevent the typical afternoon slump. The high-protein content will make sure you're rebuilding the muscle that you broke down during your afternoon workout.