HIIT stands for high intensity interval training. This is what I do. If you google HIIT you’ll find some really complex, confusing protocols. A neurologist, I see a lot of those, asked me about HIIT because I’m a physical therapist and said it seemed confusing. HIIT is easy, not confusing and you can do it with any workout. You know how on The Biggest Loser the trainers always make the contestants go at full speed for a little bit on the treadmill? That’s HIIT. HIIT just means getting your heart rate up for a short period of time then lowering your heart rate for a short period of time and alternating between the two. It’s supposed to be the best way to burn fat. I have personally found this to be true. I do HIIT on a treadmill. Going full speed for me means walking 4.1 mph. I can’t run yet. So after I warm up, I go for a minute at 4.1 mph then a minute at 2.2 mph. I alternate those for 30 minutes. Then I just walk normally for a while. I usually do this with an episode of Dr. Phil on the TV, but not when the topic is really depressing. You don’t have to watch Dr. Phil when you workout, you can probably put anything on TV.