Low Jacks
- Target muscle
- —
- Equipment
- Body weight
- Body part
- Cardio
- Type
- Aerobic
Low Jacks are a low-impact variation of the classic jumping jack performed entirely in a squat position. Instead of jumping, you step your feet in and out while swinging your arms overhead, keeping constant tension on the legs. This makes them ideal for joint-friendly cardio, warm-ups, or high-rep circuits where impact needs to be minimized.
How to do the Low Jacks
- 1Stand with your feet together and arms at your sides.
- 2Hinge at your hips and bend your knees to lower into a squat position, keeping your chest up and back flat.
- 3Step your right foot out to the side while simultaneously raising both arms out and overhead.
- 4Step your left foot out to the opposite side so both feet are shoulder-width apart, arms fully raised.
- 5Step your right foot back in toward center while lowering your arms back to your sides.
- 6Step your left foot in to meet the right, returning to the starting squat stance.
- 7Continue alternating the stepping pattern at a steady, controlled pace.
- 8Complete the desired number of reps or time interval, then stand to rest.
Form tips
- Keep your knees tracking over your toes throughout the movement to protect the knee joint.
- Engage your core to maintain a neutral spine and prevent your torso from rounding forward.
- Drive your arms up with intention — the arm swing helps elevate your heart rate and adds a shoulder-mobility component.
- Stay light on your feet and step quietly to reinforce control and reduce stress on the ankles.
- Focus on maintaining a consistent squat depth rather than letting your hips rise as you step out.
Common mistakes
- Standing up between steps: Rising out of the squat eliminates the constant muscle engagement that makes Low Jacks effective — stay low the entire time.
- Letting the knees cave inward: Knee valgus places excessive stress on the knee ligaments; actively push your knees out in line with your toes on every step.
- Rounding the lower back: A collapsed spine shifts load away from the legs and can cause lower-back strain — keep your chest proud and core braced.
- Using a shallow squat: A minimal bend reduces the cardio and muscular benefit; aim for thighs close to parallel with the floor.
- Rushing the arm swing: Swinging the arms with no control shortens the range of motion and reduces shoulder activation — raise them fully overhead each rep.
Frequently asked questions
What is the difference between Low Jacks and regular jumping jacks?
Regular jumping jacks involve leaving the ground with both feet simultaneously, making them a high-impact exercise. Low Jacks replace the jump with a side-step performed in a squat position, eliminating impact on the joints while still elevating the heart rate — making them suitable for people with knee, hip, or ankle concerns.
Are Low Jacks a good exercise for beginners?
Yes. Low Jacks are beginner-friendly because they require no equipment, no jumping, and can be performed at any pace. They build cardiovascular endurance and lower-body strength simultaneously, making them an excellent starting point for those new to cardio training or returning from a break.
Can Low Jacks help with weight loss?
Low Jacks raise your heart rate and engage large muscle groups, which increases calorie burn. Incorporated into a circuit or performed in timed intervals, they contribute to the caloric deficit needed for fat loss. They are most effective when combined with a balanced diet and a structured exercise program.
How many Low Jacks should I do per set?
A common approach is 30–60 seconds per set for cardio circuits, or 15–25 reps per set in strength-focused routines. Because they are low-impact and bodyweight-only, you can typically perform more volume with shorter rest periods compared to high-impact alternatives.
What muscles do Low Jacks work?
Low Jacks primarily stress the cardiovascular system. Muscularly, the sustained squat position engages the quadriceps, glutes, and hamstrings, while the arm swing involves the shoulders and upper back. The core works continuously to stabilize the torso throughout the movement.
