It means calm and reserve to me, perhaps coupled with a careful observation of one's manners. It's not exactly a manner of dress or speech- more a way of behaving. Bashfulness and modesty doesn't bring anything but good.
The Rca frame and basic hardware weigh less than 1.5 pounds, keeping the bike's total built weight to about 10 pounds. Tour de France riders must add ballast to hit the race's 15-pound minimum. Drag consumes up to 50 percent of a racer's energy when he's in a pack, 90 percent when he's riding alone. The tubes of the Rca frame are teardrop-shaped in cross section, improving aerodynamics.
How hard is the Tour de France? Ask Andy Hampsten, who rode the tour eight times and finished fourth twice. He says it was the hardest thing he ever did as a cyclist, so hard that it is difficult for him to convey the stress and utter bone-tiredness that sets in during the three weeks of competition. At night, the cyclists could barely move.