Flutter Kicks

A supine core drill alternating small up-and-down leg kicks while the lower back stays pressed to the floor.

How to do it

1. Lie flat on your back with your legs extended.
2. Place your hands under your glutes for support.
3. Lift both legs a few inches off the floor.
4. Alternate kicking your legs up and down in a small range.
5. Keep your core braced and lower back pressed down.
6. Continue for the desired duration or reps.

Tips

• Press your lower back into the floor for the whole set.
• Keep the kicks small and steady rather than big and wild.
• Raise your legs higher if you feel your lower back arching.

Muscles

Primary: Hip flexors, Abs

Secondary: Transverse abdominis