Feeling nervous before hitting the track is normal, but managing those nerves...

https://yenkee-wiki.win/index.php/Is_Adrenaline_Good_or_Bad_for_Performance%3F_Understanding_the_Role_of_Arousal_in_Pressure_Tasks

Feeling nervous before hitting the track is normal, but managing those nerves can boost your focus. One simple trick is to breathe in for a count of four, then out slowly for six to eight