Knee Tap Crunch
Target your core with Knee Tap Crunches! A simple yet effective ab exercise you can do anywhere!
The Knee Tap Crunch is a compound exercise that mainly works the core. No equipment needed: it uses just your bodyweight.

Optional Equipment

Knee Tap Crunch Muscles Worked
Primary
Abdominals (rectus abdominis)
Secondary
Obliques
Knee Tap Crunch Variations and Alternatives
How to do the Knee Tap Crunch
Start by lying on your back on a mat with your knees bent and your feet flat on the floor. Place your hands by your sides, palms down.
Contract your abdominal muscles to lift your shoulders off the floor. As you curl up, reach with your hands towards your knees.
Make sure to exhale as you perform the curl-up, trying to touch your knees with your fingertips.
Hold the contraction at the top for a second, emphasizing the squeeze on your abs.
Slowly lower yourself back down to the starting position while inhaling.
Repeat the movement for the recommended number of repetitions, ensuring that you maintain proper form throughout the set.
Remember to perform the exercise with control, focusing on the contraction of the abs, rather than using momentum to lift your torso. It's important to keep your lower back in contact with the mat to prevent straining.
The images provided illustrate the exercise in sequential stages, showing the movement from the initial position through the peak contraction, where the abdominal muscles are engaged, and back to the starting point.
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Knee Tap Crunch FAQs
What muscles does the Knee Tap Crunch work?
The Knee Tap Crunch mainly works the core. The main muscles are the rectus abdominis.
What equipment do you need for the Knee Tap Crunch?
None. The Knee Tap Crunch is a bodyweight exercise, so you can do it anywhere.
Is the Knee Tap Crunch a compound exercise?
Yes. It's a compound movement, meaning it trains several muscle groups at once rather than isolating one.
What are some Knee Tap Crunch variations and alternatives?
Similar exercises include the 90-Degree Heel-Tap, 90-Degree Single Knee Crunch, Ab Mat Sit-Up and Ab Roller Crunch.
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