Which is more difficult, plank on forearms or plank on hands? ADVERTISEMENT 17.43K viewsOctober 12, 2011 0 Kacy October 12, 2011 0 Comments I have been asked by clients which type is the more challenging plank. 21 Answers ActiveVotedNewestOldest 0 Shawn0 Posted 0 Comments This is pretty well covered but how about length of lever arm? On the fore arms the lever arm is ever so slightly longer then in an elevated position. So from a strictly mechanical aspect on the forearms is more difficult. You are viewing 1 out of 21 answers, click here to view all answers. Register or Login