Which of the following statements about exercising during pregnancy is TRUE?

The true statement is that pregnant women should avoid exercising at very high altitudes, particularly if they are not acclimated, because reduced oxygen availability can pose risks. Exercise is generally encouraged during an uncomplicated pregnancy, but the usual recommendation is about 150 minutes of moderate-intensity activity per week—not 2 hours of vigorous exercise. Women should also avoid prolonged exercise while lying flat on their backs later in pregnancy.

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