How to do it
Keep your ankles relaxed and let the kicks originate from your hips.
- 1
Lie on your back with your arms at your sides and legs extended.
- 2
Lift your heels a few inches off the ground, keeping your legs straight.
- 3
Alternately kick your legs up and down in a quick, fluttering motion.
- 4
Continue the movement for the desired duration or number of repetitions.
Expert tip
Keep your lower back pressed into the floor to protect your spine and engage your core throughout the exercise.
Common mistakes
- ✕Bending the knees during the flutter motion
- ✕Kicking the legs too high above the floor
- ✕Lifting the head and shoulders off the ground