How to do it
Count three seconds as you lower your legs toward the floor.
- 1
Lie on your back with your legs straight and hands beneath your glutes for support.
- 2
Engage your core and raise your legs to a 90-degree angle, keeping them straight.
- 3
Lower your legs back down without touching the floor.
- 4
Repeat for the desired number of repetitions.
Expert tip
Keep your lower back pressed into the floor and avoid swinging your legs to use your core muscles effectively.
Common mistakes
- ✕Bending the knees during the upward phase
- ✕Resting the heels on the floor between reps
- ✕Lifting the head and shoulders off the floor