No doubt, to be a good keeper, you must be willing to work at it and work hard. Goalkeeper training is physically demanding and very fatiguing. You are constantly hitting the ground, getting back up, and diving again. You must be one of the fittest players on the team. Your training is a bit different from that of the other players, as it is more anaerobic than aerobic, but goalkeepers should take pride in working harder than everyone else.