Exercise guide
Single Arm Punch And Side Knee Raise
- Intermediate
- Compound
- Reps + time
- Chest
- Lower legs
- Shoulders
- Upper arms
- Upper legs
- Waist
This dynamic standing movement combines a cross-body punch with a lateral knee drive to target the obliques, shoulders, and hip stabilizers. It improves coordination and functional core strength by integrating upper and lower body rotation in a single-sided flow.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Equipment
Setup
- Stand with feet slightly wider than shoulder-width apart and knees softly bent.
- Bring both hands up to a 'guard' position near your chin with elbows tucked.
- Shift your center of gravity slightly onto your supporting leg to prepare for the lift.
How to do it
- Simultaneously punch one arm across your body while driving the knee on that same side up and out toward your shoulder.
- Exhale forcefully at the peak of the movement, crunching your ribs toward your hip to engage the obliques.
- Inhale as you return your foot to the floor and your hand to the guard position with controlled tempo.
- Complete the designated repetitions on one side before switching to the other.
Form checklist
- Keep the supporting knee slightly bent to maintain balance and protect the joint.
- Drive the knee out to the side (laterally) rather than straight forward to maximize oblique activation.
- Maintain an upright torso and avoid rounding your lower back during the crunch.
- Pivot slightly on the ball of your standing foot to allow for smooth hip rotation.
Pro tips
- Focus on the 'mind-muscle connection' by imagining you are squeezing your side-waist as the knee and elbow approach each other.
- Keep the non-punching hand glued to your face to maintain balance and simulate proper boxing mechanics.
Make it harder
- Add a small hop on the supporting leg as you drive the knee up to transform the move into a plyometric exercise.
- Hold a light dumbbell (2-5 lbs) in the punching hand to increase the resistance on the deltoids and core.
Frequently asked
- What muscles does the single arm punch and side knee raise work?
- The single arm punch and side knee raise primarily targets the abs, deltoids, obliques, and pectorals, and also works the biceps, forearms, serratus anterior, and triceps as secondary muscles.
- What equipment do you need for the single arm punch and side knee raise?
- The single arm punch and side knee raise requires no equipment — just your body weight.
- Is the single arm punch and side knee raise good for beginners?
- The single arm punch and side knee raise is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.
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