Remember the Insanity workout DVDs from late-night TV ads? It turns 15 years old this year. So I tried the Insanity workout — and here's what I thought.

If you’re looking to follow a specific program that can be done from home, you may enjoy the Insanity workout. Let’s take a look.

Advertisement Article continues below this ad The first four weeks are spent alternating four DVD workouts: Plyometric Cardio Circuit, Pure Cardio, Cardio Power and Resistance and Cardio Recovery.

The first month has five total body workouts: Fit Test Plyometric Cardio Circuit Cardio Power and Resistance Cardio Recovery Pure Cardio ...

The DVDs consist of cardio and plyometric drills combined with interval training of strength, power, resistance, and core.

The popular Insanity workout did not work out, but brought many lessons nonetheless.

If you want to shave points off your body-fat percentage, circuit training workouts are about to become your new best friend.

The first four weeks were spent alternating four DVD workouts: Plyometric Cardio Circuit, Pure Cardio, Cardio Power and Resistance, and Cardio Recovery.

In the first phase, you get five workouts, including sequences focused on lower-body plyometrics (explosive movements), upper-body strength, cardio and abs, plus a recovery workout.

The last stage of Insanity is all about Max: Max Interval Circuit, Max Cardio Conditioning, Max Interval Plyometrics and Max Recovery.