What is a rushed workout to do at home?

I have close to 20 minutes in the morning, and i want to draw from in shape. I dont want to enjoy to buy any equipment, but is there anything other that pushups and crunches that i can do on my own?What is a rushed workout to do at home?
leap rope
You might want to take a look at 8-minutes surrounded by the morning written by Jorge Cruise. It involves high intensity resistance exercise (condensed). Very potent and very high-speed but quite confrontational. The 8-minute books should be available from your local public library. Alternatively you could visit : http://www.jorgecruise.com/
For online examples of a scale of body-weight or non-equipment based exercises call round: http://www.crossfit.com/
Hope that helps.