How turn off my tiredness and my fatigue ?

i was playing for the first time water polo it was about 3 hours. now i can't move on i am so tired and fatigue & i can't feel my arms and my legs bcz i was doing free croll as fast as i can and i masturbate so i am dead ,i felt that my coach was tutoring us i need help as fast as u can bcz my activity is every day ,thx if u are reading this