Kathy Wallace, the owner of Heart & Sole Fitness in St. Marys, will host a fundraiser, Be a Hero4Harper, at the business on Saturday. For a $20 donation, people can participate in a bungee, barre or Kangoo Jump Boot workout. Proceeds will help purchase a seizure-response dog for Harper Huelskamp, 5, who suffers from Dravet syndrome and was recently diagnosed with autism.