Hand Behind Interlock High Knee Cardio
The hand behind interlock high knee cardio uses the interlaced hands behind the head to remove arm drive from the high knee drill, increasing core and hip flexor demand. The restricted arm position makes the lower body work harder to maintain the pace.
How to do it
- Stand upright and interlace your fingers behind your head with elbows wide.
- Begin driving your knees up alternately toward your chest in a high knee pattern.
- Maintain the interlocked hand position throughout without allowing the elbows to close in.
- Keep a brisk pace to elevate the heart rate.
- Continue for the desired duration.
Form cues
- Interlace your fingers firmly behind your head with elbows wide.
- Drive your knees up toward your chest alternately at a steady tempo.
- Keep your torso tall and avoid leaning backward as you lift.
- Land softly on the balls of your feet to protect your joints.
Breathing: Breathe rhythmically in and out through your nose or mouth, matching your breath to your alternating knee lifts.
Common mistakes
- Pulling on the neck with your hands, which can strain your cervical spine and neck muscles.
- Dropping your elbows inward, which reduces the core activation benefit of the arm position.
- Landing heavily on your heels, which increases impact stress on your lower joints.
Muscles worked
Primary: cardiovascular system. Secondary: hip flexors, abs.
Suggested sets & reps
Get fitter
3–4 sets × 40 seconds, rest 60 seconds
Lose weight
3–4 sets × 45–60 seconds, rest 45 seconds
Build muscle
3 sets × 30 seconds, rest 60 seconds
Easier, harder & alternatives
Make it easier
Make it harder
Take care if…
- If you have lower back or knee discomfort, ease off the pace or choose a gentler marching option.
General educational guidance, not medical advice. Stop on sharp pain and check with a qualified professional if unsure.
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Start free →Frequently asked questions
Why put my hands behind my head?
Interlacing your fingers behind your head removes arm swing, forcing your core and hip flexors to work harder to drive the movement.
Should I land on my toes or my heels?
Land softly on the balls of your feet to keep the movement fluid and absorb impact safely.
What if I feel pulling in my neck?
Make sure you are just resting your hands lightly behind your head rather than pulling your neck forward with your arms.