Celebrate National Family Health and Fitness Day during Bartlett Park District's Open House event. Everyone is invited to come use the LIFECENTER for FREE, participate in FREE Group Fitness Flex classes, take advantage of the FREE Kids Stop babysitting service, and register for FREE prizes and giveaways. *Participants must be at least 14 years of age or older and sign a waiver. Take advantage of everything the LIFECENTER offers to find your way to a more fit and healthy you.