Why do I feel sick

[Aschaefer1]

I'm a wrestler in high school and everyonce in a while during a hard practice I start to have trouble breathing and I then I can't think and adventually break down if I stop wrestling I will feel light headed dizzy/loss of balance and my whole body tingling

Another time after a wrestling match I felt like I had a cold and I could stop sneezing and just did not feel good I'm not sure if these are related

Please help I would like to know how to prevent or stop this

[Aschaefer1]

I also get nerves when this happens