You would be amazed at how many athletes have “taken a new perspective” and spent a lot more time relaxing and enjoying life (and training), which sometimes includes going out or not going to every single practice, and have had big improvements in their sprinting.
Let us not forget the numerous stories of athletes who have partied (to some degree) or stayed out late the nights before some of their best performances. Jim Hines had champaign and spent the night having sex the day before his WR and Olympic gold…