I came across www.gymnasticbodies.com/proper-way-v-ups/ and this video www.youtube.com/watch?v=1RwgqYQpWp8 from 6:10 s (appx) onwards. The article says to go slow and controlled, but in the video by Durante, he goes really fast. ( ). So what do I follow exactly? And what am I missing here? Also, www.gymnasticbodies.com/first-things-first-mastering-hollow-body-position/ How far should I lift my upper back with my lower back pressed in? I can press in my lower back with my upper back on the ground, so, should I be lifting it up till I feel only my lower back touching (or) till just my lower back and bones (I think scapula, not sure) on the back keep touching (or) else I don't know how to do it.