“There is no necessity to live by the clock.”

“There are times when the midsummer sun strikes cold, and when the leaping flames of a hearthfire give no heat. Times when the chill within us comes not from fears we know, but from fears unknown-and forever unknowable.”

“The traditional approach to an unknown risk is avoidance.”

“...the big increases in heart and blood volumes that occur by the 12th week of pregnancy should have the same effect as 'blood doping'. This partially explains the outstanding performances of several female athletes from Eastern bloc countries who were at this stage of pregnancy when they competed in the 1976 Olympics.”

“Pregnancy does not limit lung function, and both pregnancy and exercise improve the ability of body tissues to take up and utilize oxygen.”

“...in early pregnancy her ability to tolerate heat stress improves by about 30 percent and in late pregnancy by at least 70 percent. Indeed, when a woman exercises at 65 percent of her maximum capacity in late pregnancy, her peak core temperature during exercise does not even get up to the level it was at rest before she became pregnant.”

“[Recreational exercise] does not increase the incidence of either smaller than average babies or premature labor; and it actually may decrease the incidence of both.”