20 sit ups each minute for 10 minutes
Starting at the top of the minute, do 20 sit ups, rest until the top of the next minute. Then do 20 more sit ups. Do this for a total of 10 minutes, 200 sit ups.
Enjoy the beautiful spring weather! Do something active--
Walk the dog
Run a mile
Work in the yard
Go up and down some stairs
While doing these things, try to do them a bit BETTER or FASTER than you normally would--bump up the intensity.