Hollow Body Alternating Knee Raise
This ab exercise mainly works your abs, with help from your obliques and hip flexors. Watch the demo video, then follow the tips below.
Rep Range
Time Based
How to do Hollow Body Alternating Knee Raise
Lie on your back, arms extended straight towards your feet, both your upper and lower body lifted off the ground. From here, alternately pull one knee toward your chest, keeping the other extended.
Common mistakes
Keep the lower back firmly pressed into the floor. Avoid letting your shoulders or feet touch the ground.
Breathing
Inhale as you extend the leg; exhale when pulling the knee in. Switch legs and repeat.
Muscles worked
Primary Muscles
Abs
Secondary Muscles
Obliques, Hip Flexors
Tertiary Muscles
Quads
