“I am certain that every hot yoga studio would react in the same way that this [one] did,” he said. “Although a woman may choose to take those risks on herself, that doesn’t mean that the proprietor of the hot yoga studio has to take those risks on as well.”
Davies said possible complications for pregnant women could begin after their average body temperature exceeds 37 degrees — as it could at a hot yoga class or in a hot tub.
In the first trimester, warmer body temperatures could increase the possibility of congenital abnormalities in the developing fetus as the organs are still forming. More specifically, an unborn baby may be prone to developing Spina Bifida, which is related to incomplete development of the spinal cord.
In the second and third trimester, a healthy growing fetus would already have developed organs, excluding the brain. Therefore, warmer temperatures may hinder the ability for the brain to develop normally.
Davies recommends pregnant women exercise in mild environments such as at a traditional yoga studio or a gym, on stationary bikes or treadmills.