Games involve sitting in a basement somewhere, arguing about characters that don't exist or whether or not something was fair. You aren't getting exercise, only some of the games are social, and you said yourself you don't know how to interact with girls.

[It's something he rarely talks about. Costigan prefers to hold the sanctity of home to himself sometimes. It's only Ryou's completely non-threatening personality that lulls him into the false sense of security that lets him talk about his home.]

Let me ask you somethin'. How many fights you been in? Real fights, just you and another guy and your fists.