Boxing
Heavy Bag Jab-Cross
The heavy bag jab-cross pairs a straight lead-hand punch with a straight rear-hand punch. It trains punching coordination and upper-body endurance while teaching you to transfer force through your legs and torso.
- Beginner
- Compound
- Moderate injury risk
- Rest 45 sec
How to do it
- Face the bag with your feet about shoulder-width apart, your non-dominant foot forward, and your dominant foot behind.
- Position yourself so your lead fist can reach the bag with a slight bend remaining in your elbow.
- Raise your fists to cheek height with your chin slightly tucked.
- Punch straight into the bag at face height with your lead hand.
- Retract your lead fist along the same path to your cheek.
- Punch straight with your rear hand, turning your hips and torso through the strike as you pivot on the ball of your rear foot.
- Return your rear fist to your cheek.
- Reset your weight evenly between your feet.
Form cues
- Keep your wrist straight on impact.
- Keep your free hand at your cheek.
- Exhale briefly with each punch.
- Keep your knees soft.
Common mistakes
- Leaning into the bagAdjust your distance with your feet rather than reaching your head and chest past your front knee.
- Pushing instead of punchingMake contact briefly rather than leaving your glove pressed against the bag.
- Flaring your elbowsSend each elbow forward behind its fist instead of lifting it out to the side.
Safety
Hard impacts with poor fist alignment can injure your knuckles or wrists, while overreaching can strain your elbows or shoulders. A swinging bag can knock you off balance.
- Use properly fitted hand wraps and padded boxing training gloves.
- Check the bag's padding, suspension, and surrounding clearance before starting.
- Start with light contact; increase force only while your technique stays consistent.
- Pause when the bag swings toward you or when pain or fatigue affects your punches.
If you have hand, wrist, elbow, or shoulder pain, practice without bag contact and seek advice from a physiotherapist before adding impact.
Muscles worked
Primary muscles
Secondary muscles
Equipment
- Boxing Training Gloves
- Hand Wraps
- Hanging Heavy Bag
Sets and reps
- Sets
- 2–3
- Target
- 10–20 reps
- Rest
- 45 sec
Count one jab followed by one cross as one repetition; prioritize a smooth rhythm over power.