Experts have recommended that in order to meet the current guidelines for daily physical activity (at least 120 minutes/day), planned and/or free playtime should be incorporated into a preschooler’s daily schedule. Direct observation indicates that preschoolers spend 27 – 40% of their recess time engaged in moderate-to-vigorous physical activity. By increasing children’s time in recess it is possible to increase their daily physical activity level. Therefore the purpose of this study is to examine the effects of increasing the amount of time spent in recess on overall daily physical activity in preschool age children.