Excersise more and get used to running or jumping or whatever.
by doing cardio work-outs.
exercise yes i know that but what type of exercises?
your mom gives u stamina
On Mario & Sonic at the Olympic Games, it was shown that shadow had more stamina than sonic
Wolves have more stamina than cheetahs. Even though cheetahs can run 70 miles an hour that's just for a short distance and the wolf can run 30 miles for a long period of time more than 20 miles.