Do some sit ups, push ups, jumping jacks, take a walk and smoke while your walking, or get a exercise bike and ride it. I use to have one and would ride it and watch tv at the same time. Time flew by when I was doing that. But as someone has already said I like to do the workout DVDs. I recently bought some off ebay and love it. But since I read your not into that you should just do what they made you do in gym class. You should keep your heart rate up for at least 20 mins. Whats 20 mins out of 1440 mins in a day.