I've been working out for about 3 years or so and at first I was keen to show off my **** but lately I prefer to keep it under wraps! A well fitting t-shirt where your arms just fill the sleeves can turn on a girl on more than walking around in the typical "buff wear". Besides, its more fun when girls think you're just a cool guy and then in your flirting she pokes your stomach or something and then she's like o0o0o00o and wants a look under the hood
In my experience if you're the cool guy who makes her laugh and also happens to turn her on when your shirts off she's gonna want you a lot more than the guy who is so obsessed with showing off his body like its his ace card because he expects women to want him for that foremostly - a jock.
All this said, you can pull women - usually slutty ones - with playing the jock card and it DOES work but personally its not me and I don't think pretending someone you're not is "what we're all about at the DJ centre"
So yeah go for the wife beater when you're on a trip down to get some milk, but try to give the appearence you're just a layed back guy that doesn't worry about the standards set by society, rather than the "everyone look at me I've got the goods" effect.
**** that was a lot of words about wife beaters.