I've returned to biking primarily to get fit, lose weight, and have fun. A month in, and I'm loving it. I ride a low-end mountain bike almost exclusively on pavement, and currently do about ten miles a ride, 4-5x a week. I plan for longer rides on weekends.
I also belong to a gym, but haven't been going. I'm wondering if I would see much benefit from a 2x a week routine. I'm just not a "gym guy" but I could talk myself into 2x in addition to the cycling. I'm thinking of starting with a simple circuit on machines (similar to what Curves does but this is a 24 Hour Fitness gym). Would you agree this is a good way to get started, or should i concentrate on lower or upper body exclusively? Maybe work with free weights instead?
Basically, I'm trying to decide whether to add the gym to my new regimen so any advice would be appreciated. I'm 54, 5'10", 265 pounds.