The last part isn’t true, at least unless there has been a grave accident. Many pee on themselves during races, but most of the Number 2 is done at port a potti

The last part isn’t true, at least unless there has been a grave accident. Many pee on themselves during races, but most of the Number 2 is done at port a potties along the way with an assist from the team car or peloton to get back up to speed and get back into place. You might be surprised at how little someone might need #2 when all their calories are from highly digestible into energy food.