Sidney Crosby

When you get a typical injury, you're given a time frame; you're gradually working towards getting back. With concussions, there is not generally a time frame or a span where you're feeling better. You feel like you're getting better, and it can be one day and you're back to where you started.

Whether you're trying to learn in hockey or trying to learn in life, I've always tried to be observant and tried to learn more, tried to evolve, whether it's as a hockey player or as a person. With each year, I try to do that.