Squat Jacks
A squatting jumping jack that jumps the feet out into a squat and back together, training the quads and glutes while spiking the heart rate.
Level: Foundation
Primary: Quads
Secondary: Cardio Glutes
Movement: Compound
Tags: Squat
Type: Anaerobic Intervals (HIIT / Bootcamp / Circuit) Plyometric
Equipment: Body Weight
Target muscles
The quadriceps drive the squat and the glutes extend the hips out of each rep, while the adductors pull the legs back together on the jump in. The calves handle the springy takeoffs and landings, and because the legs are working continuously through a squat range the cardiovascular demand climbs quickly. The core braces to keep the chest up through the repeated jumps.
How to perform
Setup
Stand with feet together, chest up and arms ready to swing or sit in front of you for balance. Soften the knees and take the weight into the mid-foot. Set the trunk braced so the spine stays tall as you start jumping.
Execution
Jump both feet out to roughly shoulder-width and immediately sink into a squat, hips back and knees tracking over the toes. Jump the feet back together as you stand tall, then repeat in a continuous bouncing rhythm. Land softly each time, letting the knees and hips absorb the impact, and keep depth honest — aim for thighs near parallel on each out-jump rather than a shallow dip. Drive the arms in time to help the rhythm, and keep the chest lifted so you don't fold forward as fatigue sets in.
Common mistakes
- Turning the squat into a shallow knee-bob instead of jumping out and sitting to depth.
- Landing stiff-legged, which sends impact into the knees rather than absorbing it.
- Letting the knees cave inward on the wide landing.
- Rounding forward at the chest as the pace climbs and the legs tire.
Progressions and regressions
Regress to step-out squat jacks, stepping one foot out at a time without jumping, or to plain bodyweight squats to groove the depth. Progress by increasing speed, adding a deeper squat, or holding light dumbbells at the shoulders. Combining them with a vertical jump out of the squat makes for a more explosive plyometric variation.
Programming notes
Use it as plyometric conditioning or a circuit station, thirty to forty-five seconds of continuous reps or twenty quality jumps. It raises the heart rate fast while keeping a real squat pattern, so it fits HIIT formats and leg-focused circuits. Keep landings soft and depth consistent, and ease off if the knees are irritated, since it is repeated impact through a loaded knee bend.
