I'm worried about my lower spine.
I pretty much do this exercise but I put my legs down whilemy shoulders are down and then I bring them both up at once.
The reason I'm worried about my sine is because there is a lot of pressure in the arc of my back because my legs don't touch the ground.
Thanks for the help.
I'm also doing well on my workout. Starting to see results (perhaps a little too early, must be these jungle genetics)