Well said MuleWrangler and Honeysuga!
Just a little story to emphasize that being fit is very beneficial to your riding development.
Several years ago (actually it's been more than several), my daughter began riding lessons again after a winter break. Well during that winter break, she took dance lessons and karate lessons.
Upon beginning her riding lessons in the spring, her instructor asked her what she had been doing over the winter break. When she was told, she said it was apparent as Jasmine had much better control and awareness of her body and parts of her body.