Knee In and Out Crunch (male)

Knee In and Out Crunch demonstration gif

Instructions:

  • 1Lie flat on your back with your legs extended and hands behind your head
  • 2Bend your knees and bring them toward your chest while lifting your head and shoulder blades off the floor
  • 3Extend your legs back out to the starting position
  • 4Ensure to keep your abs contracted during the movement
  • 5Repeat for the desired number of repetitions

Tips:

  • Keep your lower back flat on the floor to engage the abs
  • Do not pull on your neck, use your abs to lift your upper body
  • Keep movements smooth and controlled
  • Breath out when pulling knees in and breath in when extending legs out

Knee In and Out Crunch Muscles Worked

Arms

Back

Core

Legs