BTW, I used to think people that bought Zeiss scopes were insane! HOLY smokes they're so expensive! I was quite happy with my $200 Nikon.
It all changes depending on how deep you are into your sport.
...Slow, deep breath in followed by two quick, shallow exhales, then one long breath out. It should sound like "HEE HEE HOOOOOOOOooooooo...HEE HEE HOOOOOOOOooooooo". Once your comfortable with that breathing pattern, try to sync the tempo up with your heart rate. "Lub-dub...HEE HEE HOOOOOOOOooooooo... etc". ~ CBruce