The Happy Backs Hack

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Interval Timer Videos

Our most popular timers.

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Timer Duration: 55:00 Rollover intervals for more details.

Exercises:
  • Jj's Rotating Push Thing
  • D's Squat Shoulder Presses
  • D's Reverse Crunches
  • Jj's Knee/heel Taps - Right
  • Jj's Knee/heel Taps - Left
  • Bicep Curls / Crunches
  • Sprinting On Spot
  • Break Dancers
  • D's Back "w" Fly
  • D's Bulgarian Squats - Left
  • D's Bulgarian Squats - Right
  • Jumping Jacks
  • Plank
  • Knee X2, Kick, Jab Cross - Left
  • Knee X2, Kick, Jab Cross - Right
  • Push-ups
  • Skaters
  • Kicky Legs
  • Front Kick, Back Kick - Left
  • Front Kick, Back Kick - Right
  • Uppercut Hook X2, 3 Step Switch
  • Muscled Oblique Crunch - Left
  • Muscled Oblique Crunch - Right
  • Burpees (+/- Stiff Arm)
  • Side Kicks (2 Heights) - Left
  • Side Kicks (2 Heights) - Right
  • Speed Bag (bouncing) - Left
  • Speed Bag (bouncing) - Right
  • Just Run Somewhere
  • Warm up (STRETCHES) 5:00
  • JJ's rotating push thing 0:45
  • Rest 0:14
  • D's squat shoulder presses 0:40
  • Rest 0:14
  • D's reverse crunches 0:25
  • Rest 0:14
  • JJ's knee/heel taps - right 0:35
  • Rest 0:14
  • JJ's knee/heel taps - left 0:35
  • Rest 0:14
  • Bicep curls / crunches 0:30
  • Rest 0:14
  • Sprinting on spot 0:30
  • Rest 0:14
  • Break dancers 0:30
  • Rest 0:14
  • D's back "W" fly 0:30
  • Rest 0:14
  • D's Bulgarian squats - left 0:25
  • Rest 0:14
  • D's Bulgarian squats - right 0:25
  • Rest 0:14
  • Jumping jacks 1:00
  • Rest 0:14
  • Plank 1:00
  • Rest 0:14
  • Knee x2, kick, jab cross - left 0:30
  • Rest 0:14
  • Knee x2, kick, jab cross - right 0:30
  • Rest 0:14
  • Push ups 0:20
  • Rest 0:14
  • Skaters 0:30
  • Rest 0:14
  • Kicky legs 0:20
  • Rest 0:14
  • Front kick back kick - left 0:30
  • Rest 0:14
  • Front kick back kick - right 0:30
  • Rest 0:14
  • Uppercut hook x2, 3 step switch 0:45
  • Rest 0:14
  • Muscled oblique crunch - left 0:30
  • Rest 0:14
  • Muscled oblique crunch - right 0:30
  • Rest 0:14
  • Burpees (+/- stiff arm) 0:20
  • Rest 0:14
  • Side kicks (2 heights) - left 0:30
  • Rest 0:14
  • Side kicks (2 heights) - right 0:30
  • Rest 0:14
  • Speed bag (bouncing) - left 0:30
  • Rest 0:14
  • Speed bag (bouncing) - right 0:30
  • Rest 0:14
  • JUST RUN SOMEWHERE 0:30
  • Rest 1:00
  • JJ's rotating push thing 0:45
  • Rest 0:14
  • D's squat shoulder presses 0:40
  • Rest 0:14
  • D's reverse crunches 0:25
  • Rest 0:14
  • JJ's knee/heel taps - right 0:35
  • Rest 0:14
  • JJ's knee/heel taps - left 0:35
  • Rest 0:14
  • Bicep curls / crunches 0:30
  • Rest 0:14
  • Sprinting on spot 0:30
  • Rest 0:14
  • Break dancers 0:30
  • Rest 0:14
  • D's back "W" fly 0:30
  • Rest 0:14
  • D's Bulgarian squats - left 0:25
  • Rest 0:14
  • D's Bulgarian squats - right 0:25
  • Rest 0:14
  • Jumping jacks 1:00
  • Rest 0:14
  • Plank 1:00
  • Rest 0:14
  • Knee x2, kick, jab cross - left 0:30
  • Rest 0:14
  • Knee x2, kick, jab cross - right 0:30
  • Rest 0:14
  • Push ups 0:20
  • Rest 0:14
  • Skaters 0:30
  • Rest 0:14
  • Kicky legs 0:20
  • Rest 0:14
  • Front kick back kick - left 0:30
  • Rest 0:14
  • Front kick back kick - right 0:30
  • Rest 0:14
  • Uppercut hook x2, 3 step switch 0:45
  • Rest 0:14
  • Muscled oblique crunch - left 0:30
  • Rest 0:14
  • Muscled oblique crunch - right 0:30
  • Rest 0:14
  • Burpees (+/- stiff arm) 0:20
  • Rest 0:14
  • Side kicks (2 heights) - left 0:30
  • Rest 0:14
  • Side kicks (2 heights) - right 0:30
  • Rest 0:14
  • Speed bag (bouncing) - left 0:30
  • Rest 0:14
  • Speed bag (bouncing) - right 0:30
  • Rest 0:14
  • JUST RUN SOMEWHERE 0:30
  • Cooldown 4:46

About Interval Timer

Interval Timer is a website that allows users to create HIIT, circuit training, round, tabata or custom timers to share online with their friends or clients.

The website is also allows users of Seconds Pro to share their timers from the app with non-users.

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