its all about testosterone, my dear virtual, and cyclists can have 50% more testosterone than other athletes... they experience " 'roid rage", lol.
"http://www.dailymail.co.uk/health/a...uctive-health-increasing-estrogen-levels.html
"
Plasma estradiol concentrations were more than two times higher in the cyclists than in the triathletes and recreational athletes, and total testosterone levels were about 50 percent higher in cyclists than in the recreational athletes.
'Plasma estradiol and testosterone levels were significantly elevated in serious leisure male cyclists, a finding not previously reported in any type of male athlete,' said Leah FitzGerald."
