Children's fitness and flexibility is important for conquering cross-border games of Red Rover and avoiding bathwater that hasn’t been imported from Fiji. Open up your child's horizons with today's Groupon to the Stars & Stripes Kids Activity Center in Clarkston. Choose between two options:

• For $65, you get one summer-camp enrollment (up to a $155 value).
• For $30, you get four gymnastics classes (up to a $73 value).

Stars & Stripes Kids Activity Center sets the stage for youngsters to build strength, flexibility, and self-esteem through a variety of engaging classes. A safe, supportive training environment awaits nascent limbs in the gymnastics classes (11 months old and up), in which kids learn movement and social skills under the watchful eye of instructors, parents, and vacationing Santas. Bigger kids can start with recreational gymnastics classes, which dish on the fundamentals of taking turns, coordination, and building self-confidence, and promising monkey-bar Olympians can try apparatus training on vaults, uneven bars, balance beams, and floor exercises. Beginning and intermediate tumbling classes let kindergymnasts explore their rubbery possibilities and more inventive escapes from timeout.

Alternately, half-day summer camps address multitudes of children's hobbies, from gymnastics to dolls to cars. The It's a Small World camp (5–12 years old) educates youngsters about a host of European and Latin American countries and their cultures, along with a smattering of language instruction and some tasty regional snacks. Or, train future royalty with the Pretty Princess camp (3.5–7 years old), which features princess story telling, arts and crafts, and tales of the dangers of kissing unemployed frogs. Tumbling and gymnastics camps offer the chance to scramble around on gym equipment while building flexibility and strength.