Deck of Cards Workout is a favorite of the U.S. Military. Its real simple, take a deck of cards, pick 4 exercises. Each exercise is assigned to Hearts, Spades, Diamonds or Clubs. Draw a card and you'll do that many repetitions of an exercise.

This app automates all that so you can have the workout without carrying a deck of cards. Pick 4 exercises or have us pick 4 for you. Tap the screen to draw a card. We even count the reps you do of each exercise.

Keep going until there are no cards left.