Check with your internist (primary care physician) if you're healthy enough to exercise. If yes, then I highly recommend it. I have a recumbent stationary bike in my house, and I peddle 30 minutes per day. Most people associate exercise with physical benefits, but I exercise for the mental benefits. You have neurochemicals in your brain called endorphins, and exercise releases them. The endorphins make you feel great.

I hope this helps.