Yen, conside purchasing a cheap trainer. You can hop on it any time, spin for as long as you like, heat your body and lube your joints-- and then hop off. Not a substitute for riding, but good for those odd moments when you want a break but don't want to helmet up, face the wind, haven't the block of time. If you watch tv, you can spin away and watch without always being sedantary. If your wrists hurt, you can sit up and ride no hands. You can make it as easy or hard as you feel like. Etc.