How do you think swimming can workout a healthy GDP for a busy manager?

I think swimming will make any tired manager lose all day stress and strain, and bring him back to refreshing condition where he will be rejuvenated to positively look forward for the nextday's workout.Just as a through physician(physiotherapist) and his medicament will enrich a injured or runout sportsperson to back track into the game.
Thus swimming will Backup the manager's GDP.