Some are us tend to sweat more than others, and researchers have found that part of the reason for this is set when we’re really young, by the time we’re two years old, and it’s not genetic, but environmental. University of Michigan Health System dermatology researcher Dr. Laura Rittie explained to CNN: “Everyone is born with virtually the same number of sweat glands, but sweat glands mature during the first two years of life. Not all sweat glands become able to produce sweat (it depends on the need during that time). So people who grew up in warm climates tend to have more active sweat glands than people who grew up in a climate-controlled environment or in cold climates.” So if you grew up in a hot area you’re likely to sweat more than if you grew up in a cold climate, or even in just a well air-conditioned home.
