Feeling nervous before a race is normal, but managing it can boost your focus...

https://juliet-wiki.win/index.php/How_to_Calm_Down_Without_Looking_Like_You%E2%80%99re_Panicking

Feeling nervous before a race is normal, but managing it can boost your focus on track. This article shares a simple breathing trick—breathe in for a count of four, then out slowly for six to eight seconds—to calm your mind