I thought I was going to die first time I did level 1. Little did I know. I genuinely thought I was having a heart attack. I had to stop because my heart rate was pounding, I felt sick and dizzy and my vision went blurred. I lay on the floor of my hotel room with my mobile in my hand in case I had to call an ambulance. Entirely futile, as there is no signal in the room I'm in! I don't even know why because I couldn't do a lot of it. Why did nobody warn me that you have to be able to plank for level 2? Hmm? All you dedicated shredders and nobody mentions it! And the moves are much more complex and I have no co ordination. I don't know if I will ever be able to transition to level 2. Has an in coordinated klutz with no core strength ever managed it?