Stop spending 11 quid a month on a gym membership then and go somewhere decent.
If you use a commercial gym (pure gym, virgin, david lloyds, etc.) they cater for the cardio market, because that's what women want. They want to turn up, do half an hour on a bike and walk around in their lycra.
Join a proper gym, and you'll find 2 tread mills, and a load of plates, and some woman behind the counter selling you steroids that you buy because she's got bigger arms and pecks than you'll ever have.