You want to be lean and fit, and you know high intensity interval training (HIIT) is the fastest and most effective way, but you don't have the time or money for a gym, and your schedule is hectic enough without having to drive to classes. Sure you could buy books or DVD's, but you don't have time to read, and you get bored of doing the same workout DVD over and over. We designed The HIIT Interval Workouts Game for you. Just shuffle the cards and quickly create a workout in seconds. Don't know how to do an exercise? Scan the card with your smartphone and Sergeant Volkin will show you how in a quick video. You will get a really effective, fun, and unique workout. HIIT workouts can last as little as 4 minutes and still produce awesome results. For the most fun, play with your friends and family. Use the strategy cards to boost your points or tire your opponent out by giving him/her an extra exercise card. About Stack 52 and Sergeant Volkin Sergeant Michael Volkin has a master's degree in science, has authored 5 books, and has over 20 years of fitness experience. The US Army awarded Sergeant Volkin the Army Commendation Medal for the fitness programs he designed for the troops while stationed overseas. Stack 52 exercise games have been sold in over 24 countries. What comes in the Box: · 2 Decks of Exercise Cards (with 52 different bodyweight exercises) · 1 Deck of Game Play & Strategy Cards · 2 Dice · Visit our webpage for detailed video and written instructions