Petrov ME, Whisner CM, McCormick D, et al. - Researchers intended to determine if there is an association between newborn sleep‐wake patterns and incident rapid weight gain (RWG) at 6 months of life and overweight (OW) at 36 months. Low‐income Mexican/Mexican‐American women with OW/obesity and their infants (n = 126) registered in a 1‐year randomized controlled trial designed to prevent incident, infant RWG and toddlerhood OW/obesity. Sleep pattern metrics at 1 month have been extracted from the Brief Infant Sleep Questionnaire‐Revised. Early‐life sleep patterns associated with infant nap frequency and nocturnal vs diurnal sleep distribution have been linked to obesity outcomes and can be significant targets for intervention to prevent lasting effects on infant growth.