Ask the Experts
Q: Why do I need to drink when I'm exercising even if I'm not thirsty?
A: "There's a big link between dehydration and uterine contractions," Shashoua says. "The hormone released during dehydration is very similar to one that causes contractions." He says experiencing contractions is the most common reason pregnant women stop exercising, so drink well before, during and after your workouts.