Keep moving. "Our spines are like the rest of our body -- they're meant to move," says Reicherter. Keep doing your daily activities. Make the beds, go to work, walk the dog. Once you're feeling better, regular aerobic exercises likeswimming, bicycling, and walking can keep you -- and your back -- more mobile. Just don't overdo it. There's no need to run a marathon when your back is sore.