Opened in October 2025, Serotonin Club is a boutique fitness studio in Flatiron, NYC founded and run daily by two hands-on female founders and a small powerhouse team of women. Built to feel personal, welcoming, and community-driven, the studio offers innovative, results-focused classes including Pilates, sculpt, cardio, strength, pre/post natal classes, and more.
Our signature class, Serotonin Boost, blends Pilates and sculpt for a dynamic full-body workout designed to leave you feeling strong and energized. Beyond fitness, Serotonin Club is rooted in connection, hosting community events that bring people together both on and off the mat.
Loved the class structure, the instructor, and the space! So clean and cozy. I was having a rough day and was about to cancel class but I am so glad I didn’t! Nina’s did a great job explaining the exercises and made time fly by! They also provide everything you need unlike a lot of other studios in the city which is a plus!
JA
Julia Arcieri
3 days ago
5.0
Our fav spot in NYC! Nina and all instructors are always the brightest part of my week!!!! It's a beautiful, clean, lively space with the best energy and supportive community. Always my go to when suggesting a new space to friends.
SC
Sydney Cohen
4 days ago
5.0
Had an amazing experience at Serotonin club! I took the full body sculpt class. The instructor was very friendly, helpful and energetic! She taught an amazing workout. The studio is clean and organized. I’ll definitely be back!
MP
Mallory Pomerantz
4 days ago
5.0
Absolutely loved this place. Warm inviting space and such a nice guided workout. Will definitely be back.
OG
Orianne Garcia
Jun 24, 2026
5.0
As soon as I entered the studio I have been struck by how much good vibes there is! The place is bright and clean, I immediately felt really good there! The teacher, Britney, was super kind and very attentive and careful, the workout was challenging sometimes but totally achievable! I felt so good afterwards! Everybody was lovely and I’m looking forward to my next class, can’t recommend enough! 🩷
Updated : I went back for 2 classes with Nina, she is such an amazing coach, and a very motivating ray of sunshine ☀️ 💖! I wished I lived in NYC to be a able to be a regular there ☺️ I also took a rescue puppy yoga class organised by woofwellness and it was a super sweet chaos, absolutely loved it 🫶🐶
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