Feeling jittery before a race is normal, but managing nerves can sharpen your...

https://iris-wiki.win/index.php/Why_Do_Racing_Drivers_Use_Routines_Instead_of_Mental_Tricks%3F

Feeling jittery before a race is normal, but managing nerves can sharpen your focus on track. This article breaks down a simple breathing trick: breathe in for 4 counts, then out for 6 to 8 counts to calm your mind