When I got started in New York, it wasn't like it is now. If you were different from Miles and Dizzy, it was very difficult to make gigs and make money with your own style. ↗
You get very tired, and there was a certain amount of pain and you slow up. Your legs are so tired that you are in fact slowing. If you don't keep running, keep your blood circulating, the muscles stop pumping the blood back and you get dizzy. ↗