YMCA Strength Training

I'm still trying to sort out what the correct weight factor is for myself.  This class I went easier on the weights and didn't feel as much of a workout.  It's hard to guess because we're supposed to start out lighter and then increase weight as the class goes on.  Plus, it gets significantly harder each set and it's an hour long class.  I want to start out a bit lighter so I have somewhere to go when we have increase the weight factor.  I think next week I'll go a little heavier.