Read about this Plank challenge on Ken's thread. I'm in absolute AWE of you all!

I hope y'all don't mind me joining you here but, trust me, I'm gonna be the "baby" of the group.

I decided yesterday to try doing one (toes and forearms) and managed a grand total of 7 seconds! But for those 7 seconds, I felt my abs like never before in my life. Obviously I have next to zero core body strength. So I'm setting myself a goal of getting to the point where I can hold a 90 second plank.

This morning tho, I could not even get myself into full plank position. Abs hurt too much! So I did a modified version (knees and palms) and managed 24 seconds. I think I'd better stick with modified for awhile till I build up to at least a minute or so that way before shifting back to the full version.

Am I correct in thinking, that for women at least, going from easiest to hardest versions would be:

1) knees and palms
2) knees and forearms
3) toes and palms
4) toes and forearms