Always heard from teammates that wrinkling your bib helps reduce drag as it adheres to your jersey more tightly. Also, similar to the dimpling of a golf ball which is designed for the same effect. Is this true? I understand that the difference would be slight, but curious if there is a plausible advantage…
Not sure it helps or not but several of my runners do this. I am sure it does not hurt. Might knock your 8K time gown from 25:32.67 to 25:32.55
It is true. Pinning an unwrinkled bib number to one's jersey is essentially the same thing as clipping a parachute or a ship's sail to one's self.
Just use the Virginia Tech wind tunnel for a test.