A heart rate monitor will give you an estimate of calories burned during cardio exercise, but it's not going to be accurate for strength training or other activities like yoga. Here's an Ask the Expert that gives our suggestions for how to track DVDs: www.sparkpeople.com/community/ask_the_expe
"You may have a fresh start any moment you choose, for this thing that we call "failure" is not the falling down but the staying down." Mary Pickford
"No matter how slow you go, you are still lapping everybody on the couch."