I agree with Seattle Pioneer It builds character. My troop used push ups for goof-ups and I did push ups till my arms fell off. But , you know what , I did earn my Eagle and two palms. I came back to my troop as an adult leader and took the boys to summer camp and I also used push ups for goof-ups. I have modified it a little and hopefully this will work with you younger, kinder and gentler leaders. I do the push ups WITH the boys. If its just one or the whole troop. I count , vary the up and down ( stay down position longer or shorter) and oh yes, always smiling faces." Come on now let's see a big grin . I want to see those pearly whites."
This does a couple of things,first you freak them out cause your doing them with them, next, your not standing over them like a D.I., next, they're not going to let some old man do more than them, and somewhere in there you are able to form a good relationship with them that causes them to want to do the right thing because it's right , not for fear of discipline. Life is hard. Boy Scouts is training for a boy to learn how to be a man in real life. Let us all keep our eyes on that goal, which ever way we choose to instruct.