we pick up rekha shanmugam, who's from the sri ramachandra research institute in chennai.e impact of heat stress on pregnancy for the last seven years and wanted to show me how she's been doing it. throughout her study, her team would set up this temperature gauge, measuring the level of heat workers were exposed to during their shifts on several days throughout their pregnancies. this is environmental heat stress monitor. this gauge doesn'tjust measure your standard temperature, it also takes into account humidity and radiant heat. the safe threshold for people working in a field like this one, measured in what's called wet bulb globe temperature, is 27.5 degrees celsius. now, the temperature is 29.5 degrees centigrade. quite it is high right now. we're going to work for a prolonged period. with this temperature, they are more prone for heat—related illnesses and other effects, for especially for the pregnant women — they are more prone for adverse pregnancy outcomes such as miscarriages, low birth weight, preterm birth, stillbirth and congenital birth defects, too. how s