From their event page:

Join Fairmount Park Conservancy and the Strawberry Mansion CDC for a free chair yoga program at The Yard on Coltrane Street!

Chair yoga allows for stretching and increasing flexibility while seated, making it suitable for different ages and ranges of mobility. Folding chairs will be set up in The Yard, a new outdoor public space managed by the Strawberry Mansion CDC and located at the neighborhood edge of East Fairmount Park behind the famous John Coltrane House.

This programming is supported by Reimagining the Civic Commons, a collaboration of The JPB Foundation, the John S. and James L. Knight Foundation, The Kresge Foundation, and local partners.