1) Sports do not require exercise; Darts, Bowling, Curling, Competitive Eating, Competetive Video games, etc.
2) Learning is required for Sports. Strategy, practice, muscle memory, etc.
Learning is what we do every day we live. If we want to or not, if we realize we are, or aren't. We are also tested on this knowledge every second of our lives, if we want to be or not.
Learning is part of our existence, and to learn is to live.