Racing nerves can easily disrupt focus, but simple breathing can help—try a...
https://www.easybookmarkings.win/nerves-can-make-or-break-a-race-day-but-managing-them-is-easier-than-you
Racing nerves can easily disrupt focus, but simple breathing can help—try a 4-count breath in, then slowly exhale for 6 to 8 counts to calm your mind