Satan was cast out of heaven because he created the erg. equal to having your balls repeatedly smashed by a sledgehammer, erging (to erg) goes completely against human nature. Evolution has taught us to avoid pain: hence reflexes. Unless you are Charles Manson or Chuck Norris you should not enjoy pain. The best is when you finish a hard crew practice and you and your teammates almost drop the boat when putting it away. So your coach tells you to mount the erg and start pulling as hard as you can until she says stop.