You can make it into an awesome interval or circuit workout.<br><br>
Alternate 1 min JR with other things -- emphasize large-muscle movements to keep the HR up: squats, lunges, push ups, dips on bench, crunches on the ball, jumping jacks, arm curl with plies, etc. Repeat the cycle to get 20-30 minutes.<br><br>
Then work up to 2 min. jumping rope!