Making fitness fun for 3 5 year olds. Even active preschoolers need daily structured healthy exercise. Make exercise for young children playful and fun youll capture their imagination and theyll never be bored. Age appropriate movements on Preschool Gym include stretches dances gross and fine motor activities creative movement and marches. The variety of action songs will help develop healthy bones muscles and joints and increase body strength. Motivate young kids with the beat of the music and these creative exercise routines and cut down on too many long hours in front of the TV and computer screens.