Oh brother, sometimes I wonder why people even belong to a gym? If you're going to lift, for whatever reason, going extremely light ain't going to do shit. Doing some Cobra Commando move isn't going to do more than your basic lifts. Simply look at the people doing them, and you'll see what results you get.
My favorite person at the gym is the guy who says,
I want to work my core.
Translation: I don't want to lift anything too heavy cause I'm scared my "monster genes" will allow me to gain too much muscle.
I'm not trying to get real big.
Translation: My genetics and work ethic would never allow me to gain more than 7lbs of lean mass.
I'm working on the "mind muscle" connection.
Translation: I increased the amount of gh and gear I ingest, while decreasing the intensity of my workouts.