Oh, I don't really know what they're called. I think one is the Superman or something. Some you can do are laying on your stomach, lifting one leg and the opposite arm, holding, then switch. Here's some health links for you.

http://www.healthstatus.com/cbc.html

http://www.internetfitness.com/calcu...alburncalc.htm

http://www.wvda.org/calcs/sport.html

http://www.caloriesperhour.com/

http://www.thecaloriecounter.com/

http://www.calorie-counters.net/

There's plenty more.