Build strength and boost your metabolism with this fun HIIT workout. Sarah designed this workout with optimized interval blocks to enable your body to burn calories post-workout by entering into a state of EPOC (excess post-exercise oxygen consumption). Be sure to drink plenty of water during and post-workout.

2. HIIT Tornado Challenge #2 (old)

Get ready for a fun HIIT challenge that'll leave you sweating and feeling like you just climbed Everest. Sarah designed this workout with optimized interval blocks to enable your body to burn calories post-workout by entering into a state of EPOC (excess post-exercise oxygen consumption). Be sure to drink plenty of water during and post-workout.

3. x5 Intensity: HIIT Bodyweight #5

Welcome to x5 Intensity, your 5 week, full body transformation workout series. In this, the fifth and last week of Bodyweight Intensity, you're going to hit the mat and get a sweat on as Pace and Go take you through their unique workout program designed to work your upper body, lower body, cardio, and core, in just 30 short minutes, all with no equipment needed! So join Grokker experts, Jenny Pacey and Wayne Gordon, and transform your body with their unique workout series, x5 Intensity.

4. 30 Minute HIIT Workout #2

If you want to tone your body entire and burn a crazy amount of calories, you've found the right workout! Sarah will lead you through a riogorus interval circuit that includes plyometrics, strengthening workouts, and more cardio than you thought could fit into 30 minutes. If you like this video, be sure to check out Sarah Kusch's Get Tight in 28, a workout program designed to help you lose weight and build total body strength.