Strength endures: At left, Nick Koroly of Munhall supports Justin Olen of Churchill as he flips upside-down Sunday afternoon as members of Pittsburgh Acro, an AcroYoga group, practice in Schenley Plaza in Oakland. (Photo by Michael Henninger/Post-Gazette) #Pittsburgh #PGH #412 #PittsburghAcro #AcroYoga #Yoga #SchenleyPlaza