Mighty Nimble
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Epic Fat Burn

Intermediate, time-based HIIT with full-body intervals and short rests.

Warm-Up

5 minutes. Raise heart rate and prep joints for faster movement.

March in Place
March in Place1 min
Arm Circles
Arm Circles1 min
Hip Hinge
Hip Hinge1 min
Inchworm
Inchworm1 min
Jumping Jack
Jumping Jack1 min

Circuit A

40s work / 20s rest between exercises. Push pace but keep form.

Bodyweight Squat
Bodyweight Squat40 sec
Mountain Climber
Mountain Climber40 sec
Push Up
Push Up40 sec
High Knees
High Knees40 sec
2 rounds · 1 min rest
1 min rest

Circuit B

Stay explosive on the work intervals; breathe during rests.

Burpee
Burpee40 sec
Reverse Lunge
Reverse Lunge40 sec each side
Plank Shoulder Tap
Plank Shoulder Tap40 sec
2 rounds · 1 min rest
1 min rest

Circuit C

Finish strong. Control your core and keep your lower back neutral.

Jumping Jack
Jumping Jack40 sec
Glute Bridge
Glute Bridge40 sec
Mountain Climber
Mountain Climber40 sec
Dead Bug
Dead Bug40 sec
2 rounds · 1 min rest

Cool-Down

2 minutes. Bring heart rate down and loosen hips/legs.

Child's Pose
Child's Pose30 sec
Hamstring Stretch
Hamstring Stretch30 sec
Quad Stretch
Quad Stretch30 sec each side
Every Exercise Targets Your Metabolic Engine

Every Exercise Targets Your Metabolic Engine

Burpees, Mountain Climbers, and High Knees are sequenced to spike heart rate into anaerobic zones, while Bodyweight Squats and Reverse Lunges recruit large lower-body motor units that demand outsized caloric output. Push Ups and Plank Shoulder Taps layer in upper-body and anti-rotational demand, ensuring no muscle group coasts through the interval window.

HIIT Fat Loss: It's an Oxygen Debt Game

HIIT Fat Loss: It's an Oxygen Debt Game

Time-based intervals without fixed rep counts exploit EPOC—excess post-exercise oxygen consumption—meaning your metabolism stays elevated for hours after the session ends. The short rest windows between compound movements like Burpees and Jumping Jacks keep lactate accumulating, forcing your body to become more efficient at clearing it with each session.

Structure Your Effort to Outlast the Burn

Structure Your Effort to Outlast the Burn

The Inchworm and Hip Hinge warm-up primes posterior chain mobility before your joints absorb the impact load of jumping patterns, reducing injury risk during peak intensity. Apply a rate-of-perceived-exertion target of 8 out of 10 during Burpees and High Knees, then use Glute Bridge and Dead Bug in the cool-down as active recovery to reinforce core stability before the session closes.

Epic Fat Burn | Mighty Nimble | Mighty Nimble