The largest of the functional fitness gyms in Chennai, The Quad has four branches {and an office} in Chennai and currently offers four different services: Bootcamp {outdoor group fitness classes}, Personal Training {one on one coaching indoors}, Nutrition and Physiotherapy. The Quad offers a premium service. Well worth it if you want the best out of functional fitness.
Prices start from 18,000 INR for three months.
Find them online here.