Exercise guide
Jab Crosses
- Intermediate
- Compound
- Rep-based
- Back
- Chest
- Lower legs
- Shoulders
- Upper arms
- Upper legs
- Waist
The Jab Cross is a foundational boxing combination that builds cardiovascular endurance and rotational power, specifically targeting the shoulders, triceps, and core through explosive pushing movements.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Secondary
Equipment
Setup
- Stand with your feet shoulder-width apart, then step your non-dominant foot forward into a staggered stance.
- Distribute your weight evenly on the balls of your feet with a slight bend in your knees.
- Raise your fists to chin level, keeping your elbows tucked close to your ribs and your chin slightly tucked.
- Align your lead shoulder toward your target.
How to do it
- Extend your lead hand (Jab) straight out, rotating your fist so the palm faces down at the point of impact while exhaling sharply.
- Quickly snap the lead hand back to your face while simultaneously throwing your rear hand (Cross) forward.
- Pivot on the ball of your back foot and rotate your rear hip forward to drive power into the Cross, exhaling again.
- Maintain a rhythmic 1-2 tempo and return to your starting guard position immediately after the second punch.
Form checklist
- Keep your non-punching hand glued to your cheek for protection.
- Rotate your hips and torso to generate power rather than just using your arms.
- Avoid locking your elbows at full extension to protect the joints.
- Keep your shoulders down and relaxed to prevent neck strain.
Pro tips
- Focus on the 'snap' by retracting your hand faster than you throw it; this engages the serratus anterior and improves speed.
- Imagine squishing a bug with your back foot during the Cross to ensure full hip rotation and oblique engagement.
Make it harder
- Hold light dumbbells (1-3 lbs) to increase the demand on the deltoids and core stabilizers.
- Add a squat or a 'slip' (lateral head movement) between each Jab-Cross combination to increase lower body and abdominal involvement.
Frequently asked
- What muscles does the jab crosses work?
- The jab crosses primarily targets the calves, glutes, hip flexors, and serratus anterior, and also works the adductors, hamstrings, and quadriceps as secondary muscles.
- What equipment do you need for the jab crosses?
- The jab crosses requires no equipment — just your body weight.
- Is the jab crosses good for beginners?
- The jab crosses is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.
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- Burpee Single Leg JumpIntermediate · calves, glutes, hamstrings, and quadriceps