How about joining a gym? Lifting weights, using the elliptical machine and a host of classes that are offered, would give you diversity in your exercise program AND keep you fit!
You dont have to use the equipment to strain yourself, just to get your heart rate going.. and lifting weights to tone, not to build, wont take you 'out'.
I have joined a gym and i have seen improvement within myself. The elliptical is a great machine to work off stress, as it encompasses the entire body without the strain of jogging.
and get an IPOD..
IPOD and GYM= stress relief!