Sometimes it seems like kids have too much energy to spend the day indoors. Chances are you’re probably craving some fresh air too. Why not get the whole family together for a day of tennis? The Billie Jean King National Tennis Center is the largest tennis facility in the world. This is also where the US Open is held annually. The courts are open to the public ten months out of the year, but even when they are not it’s also good to get inspired by seeing how the pros do it. Go earlier in the day to save a few dollars, and maybe use that extra money for some refreshing lemonade. Challenge each other to see who has the best serve. An active family day is a great way to have fun, catch up, and get healthy. You never know, with enough practice you may be coming back years from now to see one of your kids play on center court!