I can now hold my regular and side planks for over a minute, plus do a series of progressions. But I cannot get my backside off the ground to do a reverse plank. I think my torso is just too heavy for my arms or shoulder girdle to support. I can do bridges, but it doesn hurt my lower back after awhile. This may just get easier for me to succeed at this after I lose a lot more weight. But if anyone can give me some tips, I'd appreciate it.