If you're flopping on the couch at the end of the day instead of tackling your to-do list, try these tips:

• Revive with 20 minutes of exercise.
• Take a 25-minute nap. (Studies show a short snooze is perfect for improving alertness.)
• Stave off afternoon blahs with snacks of whole grains, fruits and vegetables, and protein. Avoid candy and chips.
• Become a better night sleeper by easing into bed. Read, take a hot bath, and avoid computer screens before bedtime.

Try these four strategies over the next seven days, and see if you get more stuff done.