Performing the: A Step-by-Step Tutorial Lying Lifting
Next, slowly lift both of your legs off the ground, keeping them straight, until they are in a vertical position or as near to vertical as you can manage.
Hold this position for a few seconds, keeping your core engaged and your back flat against the ground.
Then, slowly lower your legs back down to the starting position, ensuring that you are controlling the movement and not allowing your legs to just fall back down.
Repeat this exercise for the desired number of repetitions, making sure to maintain proper form and control throughout.