Sometimes, you just can't beat that afternoon slump. Sitting at a desk all day can leave you feeling the opposite of energetic, especially around those postlunch hours when our bodies expend more energy digesting or we crash from the effects of our morning cup of coffee. Luckily, you don't have to spend your 9-to-5 dreading the inevitable urge to take a midday nap. Here are some ways to combat that afternoon slump.