Also on these boards
HIIT Cardio Workout - Tabata High Intensity Interval Training
For everyone who asks what I do to burn 600-700 calories/hour on the elliptical, this is a great way to start HIIT (high intensity interval training) and get the most out of your cardio workout. Start with these levels (6-12) and try to work your way up to intervals of levels 10-16 (difficult but worth it!)
Mix some cardio into your strength training for a short and intense workout.