A recent study found that breastfeeding mothers who exercise transmit a beneficial hormone called “adiponectin,” which may help protect their children from obesity. The study was conducted by researchers led by Trine Möholdt at the Norwegian University of Science and Technology.

Women who exercise intensely over a period of time have a higher percentage of this hormone in their milk after training. The World Health Organization estimated that 93 million children under the age of five were diagnosed as overweight or obese in 2020.