If you think the challenge is doing the workout well...it I suppose it could be difficult if you're not in good shape, but that's not the hard part. I go through a routine of abs exercises. I talk about how each activity sculpts the abs in a different way. The challenge is going through the whole video without stroking. Try to pay attention to what I say when I'm doing each rep with full frontal nudity and a pussy shot right in front of you! If you can't that's fine, but you'll need to do the workout again until you follow through