The contract also prohibits the woman from smoking, drinking, doing drugs, entering hot
tubs and saunas, handling cat litter, applying hair dye, engaging in sexual activity in the weeks leading up to the
birth and
during the
first three weeks following implantation, drinking more than one caffeinated beverage per day, and eating raw fish.
The worry comes in more with hot
tubs, which are typically programmed to be 104 ° F. Exposure to temperatures over 102 ° F
during the
first trimester of pregnancy is linked to increased risk of
birth defects.
Another study showed that pregnant women who used a hot
tub for any length of time more than once
during their
first trimester had a 50 % increased risk of
birth defects.