We've had our gym membership for 10 months now and I'm still going pretty regularly (minus bad winter weather and illnesses). The class schedule keeps changing and I can't get to some of the classes I like (like body pump) and I am not good about working out on my own.
I've mostly been doing spin and yoga. On a good week I hit three yoga classes (2 power and 1 level 2). I spin once a week and try to run/walk on the treadmill for 30 minutes before my yoga classes. I'm trying to fit a second spin class in.
I think I'm getting enough cardio in, but is yoga enough "strength training"? I don't know if it fits the definition.