Perk up your energy today with good, old-fashioned physical exercise! And before you start worrying about how to fit in a marathon before lunch, relax. Your feats don’t have to be huge. Just take a walk someplace you ordinarily would drive to. Take the stairs instead of the elevator. Do some sit-ups while you watch television. The idea is to get your body moving and your blood pumping, not push yourself to your very limits. Start small and see how you like it.