Recently my sister got me the Biggest Loser Workout video, let me just say, "it is an awesome workout!" I had sweat rolling off my nose. My youngest daughter even worked out with me, and commented that it was a great workout. She told one of my very slender neighbors, "You should do the Biggest Loser". Thankfully, my friend didn't take any offense to the comment.
In regards to exercise here is a great quote, "The difference between good and bad habits is that the reward for a bad habit is temporary and is often followed by negative consequences, and the reward for a good habit can be more long lasting and is often followed by positive results." Think about that one as you are debating between eating that extra brownie or working out.