Is it the on-site Botox shots at Healthworks? The Himalayan salt wall in the sauna at Sports Club/LA? The fresh cut Winston flowers at Equinox? What makes a person choose one tony health club over another?
In Chestnut Hill, the answer to that question is playing out along a fashionable half-mile stretch of Route 9 as two posh gyms move onto the street — Equinox and Sports Club/LA — and an existing club, the high-end, women-only Healthworks — fights to hold onto its members.