you have to be quite all the time
It makes them want to play that sport. If they want to play they play hard.
You really need to be motivated to participate in sport. You will normally be motivated by your coaches, teachers, and even your parents. They'll motivate you to try and improve your performance.
"seasonal". And it doesnt effect sport performance.
Extrinsic is the satisfaction of winning, prize money, rankings and sponsorship in sport.
It can affect your sport's performance by the characteristics you have that affect play.
ALL DRUGS will affect your performance in some sort of way.
Diet affects your sport performance because if you have the right diet then you will not have energy and fitness.