Wearing jewelleries might affect sports performance because you might hit someone with that jewellery
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
if you concentrate and don't swap mosquitoes you can do sports faster
it enhances it, makes you better, spares you from injury
because if you set a target you will want to reach your goal and do better in your performance
taking steroids makes u big