it enhances it, makes you better, spares you from injury
Wearing jewelleries might affect sports performance because you might hit someone with that jewellery
Eating a diet tailored to the form of exercise you are undertaking will definitely boost performance. Also fluid intake is very important (water is the best), being 5% dehydrated reduces performance by 20%.
Badly
if you concentrate and don't swap mosquitoes you can do sports faster
Steroid's
Harder to breathe.
It affects your concentration and the performance. If you're very anxious, you can not focus or concentrate on work, school, and sports.
Well if you are drunk then it can affect your co ordination and spatial awareness
pressure, diet, depression
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if you concentrate and don't swap mosquitoes you can do sports faster
by doing work hard like runing playing sports