yes and no.
Sex causes a large increase of Adrenalin in the Body. This may or may not cause you to preform better at a sport. In some High contact sports such as American Football, High Adrenalin can help you get into the game easier... or just tire you out. I still wouldn't recommend getting your freak on before a game.
Wearing jewelleries might affect sports performance because you might hit someone with that jewellery
Badly
Yes !
if you concentrate and don't swap mosquitoes you can do sports faster
Premarital sex itself does not directly impact sports performance. However, engaging in risky sexual behaviors, such as unprotected sex, can lead to sexually transmitted infections (STIs) which may have negative effects on an individual's overall health and well-being, potentially impacting their physical performance in sports. It is important for athletes to practice safe sex and prioritize their health to maintain peak performance levels.
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
it enhances it, makes you better, spares you from injury
if you concentrate and don't swap mosquitoes you can do sports faster