Stronger After Months Off

cwsreddy

I wasn't training or working out consistently for... months. Previously when I was really in the groove, I was using 25lb dumbbells for bicep curls doing 8-10 reps. I could do 30s, but usually only 3 or 4 reps max. (Yes, I'm short and skinny. Someday I'll lift more )

But the question is this:

I've just gotten back on the wagon, and I picked up some 30s tonight just for funsies, and did 10 reps without even struggling too badly. I'm not complaining, but I'm curious if anyone out there more knowledgeable than me could explain the increase in strength even after months away from any consistent training and no significant weight gain.