JULIE HUSS/Staff photo. The "0 Hero" paid a visit to children at Moose Hill Kindergarten in Londonderry Feb. 11 to help celebrate the school's 100th day. Children gathered with the super hero in the hallway to do 100 different exercises including jumping jacks, arm circles, and deep knee bends, all the while counting and keeping track of how many things they did as they approached 100.

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