Leg Pull Back is not a name I like, but that’s what this exercise is called.
I prefer Reverse Plank With Leg Lifts.
Start sitting on the floor. Dig your heels into the mat and squeeze your shoulder blades together behind your back before lifting your upper body off the mat as in the photo.
This is a difficult position, so remain here for as many deep full breaths as you can, then slowly come back down and stretch your wrists in the opposite direction. Continue practicing until you can hold the position for at least one minute before adding any leg lifts.