When you are trying to conceive, many doctors will tell you to lay off the exercise. “Personally, I took a moderate approach. I didn’t train for a marathon during this time—there was no point,” said DeBoom.
She also put on a couple of pounds, which she thinks helped. “If you have regular cycles, it is easier to get pregnant. But for those endurance athletes so lean they have irregular cycles, gaining weight might help,” she said.