Clean hands, feet and nails are essential
Imagine that you are at a temple, or in such a situation that you have to take off your shoes or sandals and let those smelly feet out. You’ll receive awkward looks all around you. How would that feel? Not good, I presume. Hands and feet need to be taken care of, as they are the most exposed parts of the body and experience the most friction. Also, you don’t want dirt to be jammed up inside your nails and cause pimples on the face of the girl that you caress, maybe? I’m sure she wouldn’t be inclined to forgive you at all.