More low abdominal workouts at home: legs pull in with a kick up

This exercise targets: abdominal muscles, especially lower abdominals
For this exercise, you will need: an exercise mat

Lie down on your back with your hands below your butt and the palms facing down. Your legs should be straight and just above the ground.

Pull your knees toward your midsection and push your hips up with your lower abdominal muscles, while also straightening your legs. Return to the starting position and repeat.

Tips:
At the highest point of the exercise, try to keep your legs as vertical as possible.
Push your hips up as high as you can and squeeze your abdominal muscles.
If you want to make this exercise heavier, tuck your chin into your chest.
Exhale during the effort or lifting phase and inhale during the lowering phase.

Beginners: 10 repetitions
Intermediate level: 15 repetitions
Advanced level: 20 repetitions

source