I play lacrosse on my high school varsity team. The problem is that I get tired so easily, that I usually only stay out there 3-4 minutes. My abs and chest start tightening up even after one sprint. How can I develop my stamina? I know I could be good only if I had the stamina.
Also, for the people who never seem to run out of stamina, when you are doing vigorous running, does it feel easy? I want to get to the point where I can stay out on the field without having to worry about fatigue.
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