No one doubts that mothers - especially pregnant mothers - are among the busiest people on earth. And while the benefits of exercise for these women and their developing fetuses are widely known, many expectant mothers do not exercise. A survey examining daily activities of moms-to-be will soon be released as part of a larger study looking at the effect of maternal exercise on fetal development. The results suggest, among other things, that exercising during pregnancy does not require "stealing" time from other activities.