But jumping into a pool is definitely a worthwhile ... have found that just 30 minutes of swimming a day can reduce coronary heart disease in women by 30 to 40 percent,' says Gagne.

In one day, she became the first woman to swim the distance in under 54 seconds, then in under 53 seconds. Just 26 minutes later was back in the pool for the final of the women's 100m medley, an event ...