How to stay warm economically...

Just find a friend or two, a blanket (one will do depending on how many friends you find) and just lie back and enjoy the sleep.

Tips On The Matter

1. If you do this be sure you've had a shower recently out of consideration for your friends.
2. The more the merrier.
3. Try to balance out the sexes for everyones sake.
4. Find a comfortable position from the beginning. Chances are you won't be able to move later on.