Exercise guide
Plank Thigh Tap
- Intermediate
- Compound
- Timed hold
- Lower arms
- Lower legs
- Shoulders
- Upper arms
- Upper legs
- Waist
The Plank Thigh Tap is a dynamic core stability exercise that enhances anti-rotational strength and shoulder stability by challenging your balance on three points of contact. It effectively targets the rectus abdominis and obliques while engaging the upper body to maintain a rigid posture.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Setup
- Start in a high plank position with your hands directly under your shoulders and palms flat.
- Position your feet slightly wider than hip-width to provide a stable base for the movement.
- Engage your core, glutes, and quads to create a straight line from your head to your heels.
How to do it
- Shift your weight slightly onto your left hand while keeping your hips perfectly square to the floor.
- Exhale as you lift your right hand and reach back to tap your right thigh, maintaining a rigid torso.
- Inhale as you return your hand to the starting position with control.
- Repeat the movement with the left hand tapping the left thigh, alternating sides at a steady tempo.
Form checklist
- Keep your hips level and avoid any side-to-side rocking or rotation.
- Maintain a neutral spine; do not let your lower back sag or your hips pike upward.
- Keep the supporting arm locked out and push the floor away to engage the serratus and deltoids.
- Keep your neck neutral by looking at a spot about 6 inches in front of your hands.
Pro tips
- Focus on 'anti-rotation'—the goal is to move your arm without letting any other part of your body move.
- Squeeze your glutes as hard as possible to stabilize the pelvis and prevent hip hiking.
- Slow down the transition between hands to maximize the time spent balancing on one arm.
Make it harder
- Bring your feet closer together to narrow your base of support and increase the stability challenge.
- Perform a 'Cross-Body Thigh Tap' by reaching your right hand to your left thigh and vice versa.
Frequently asked
- What muscles does the plank thigh tap work?
- The plank thigh tap primarily targets the abs, deltoids, obliques, and pectorals, and also works the erector spinae and serratus anterior as secondary muscles.
- What equipment do you need for the plank thigh tap?
- The plank thigh tap requires no equipment — just your body weight.
- Is the plank thigh tap good for beginners?
- The plank thigh tap is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.
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