I've been looking at this, I'm not sure if I can post these links, please edit if necessary.

http://www.marksdailyapple.com/prison-workout/
http://www.geocities.com/rutgerseskrima/art_prison.html

It sounds good to me and I tried it last night, other than having fun, this morning I am a bit sore in my abs and legs so guess it worked.

I'm wandering if anyone does or has done it and if it gives results.

I can't view the sites because I am at work, but IMHO, anything that makes you move more, makes you sweat and is fun, is a good thing... Go for it!!

All of those exercises are good body weight exercises that should give you good results.....if you're consistant. That's the key. Keep it up!

I might be weird, but I've often reflected that if one was confined to a tiny space, one could still manage to keep fit by doing body weight exercises and cardio (as long as the guards wouldn't yell "Hey you! cut that out!")

Those were very interesting reads, thanks for the link! This 48-yr-old is gonna try a burpee later