How does an Experienced Cyclist remain calm before a big Event ?

For Mark Herbst of Horseshoe Valley, he absorbs everything. Processes all the information he can from competitors and Race Officials. He looks cool & relaxed, but that brain of his (like Peyton Manning) is continually evaluating data. I think this picture of Mark sums it up pretty well. This if the Friday before the commencement of the race. Mark is thinking :
[a] how many bananas have i eaten this morning ?
[b]"I'm suntanning my legs from the knees down, while i have the opportunity".
[c] Jeez, the Crew is working pretty hard.
[d] "Let me know if you guys need the back of the van for anything?"