Invite up to 20 kids to celebrate your birthday party for one hour at the United Studios for Self Defense in Menlo Park.  Your child and their guests will play fun games with martial arts training.  The children will have a blast learning self defense and receive the added benefits of exercise!  No food is allowed in the studio, but a great tip is to continue the party next door at the Yogurt Stop which makes delicious birthday cakes!  Party must be scheduled after 2:00 pm only for a Sunday afternoon.  Expires 12/31/2012.