Muscle size versus strength

You want to be strong? However, you don’t want bulking muscles! How could that be possible? Well, it is possible, by training the neuromuscular system. First, consider climbers who have to be lean and strong at the same time. Second, consider all the videos that Anatoly made about how he fooled much larger guys in the gym and lifting the same weight as them with ease.

The general idea of training is that you overload something so you get better at it over time.