Alternating Single-Leg Arm Bent-Knee Under Crunch
The Alternating Single-Leg Arm Bent-Knee Under Crunch mainly works the core. No equipment needed: it uses just your bodyweight.
Optional Equipment
Alternating Single-Leg Arm Bent-Knee Under Crunch Muscles Worked
Primary
Abdominals (rectus abdominis)
Secondary
Obliques; Hip Flexor (iliopsoas)
How to do the Alternating Single-Leg Arm Bent-Knee Under Crunch
Setup
Lie flat on your back on a mat with your legs extended.
Reach your arms fully overhead, extending your body into a straight line.
Movement
Simultaneously lift your upper body and one leg toward the ceiling.
Bring your arms forward to reach toward the elevated foot, engaging your core to lift your shoulders off the mat.
Keep the non-working leg straight and hovering slightly above the floor.
Lower back down to the starting position with control, keeping your core engaged throughout.
Alternate legs with each repetition, reaching toward the opposite foot as you perform the movement.
Alternating Single-Leg Arm Bent-Knee Under Crunch FAQs
What muscles does the Alternating Single-Leg Arm Bent-Knee Under Crunch work?
The Alternating Single-Leg Arm Bent-Knee Under Crunch mainly works the core. The main muscles are the rectus abdominis.
What equipment do you need for the Alternating Single-Leg Arm Bent-Knee Under Crunch?
None. The Alternating Single-Leg Arm Bent-Knee Under Crunch is a bodyweight exercise, so you can do it anywhere.
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