What defines us
B3B is a chain of boutique studios exclusively for women, with a method of our own that pioneered the concept in Spain. We opened our first studio in 2015 with one intention: to boost women's vitality. Our movement will help you reconnect with yourself, unlock your personal power and lift your confidence to inhabit your body with strength and self-assurance.
A community by your side
When a method truly works, there's no need to say it out loud. The proof lies with the more than 50,000 women who have been part of our community over the years — still the very best voices to explain what being here truly means. A community that drives, inspires and supports you, turning every workout into a source of energy that stays with you throughout the day.
Three levels of impact
The method's first impact begins in-house. In 2026 the World Happiness Foundation named us the organisation most valued by its teams.
With a community of more than 50,000 women, we create an environment that redefines the physical and emotional wellbeing of our B3B Lovers.
The effect doesn't stay in the studio. It reaches each woman's family, friends and professional life as an energy that improves every moment of the day.
B3B lovers say it best
“The trainers are, without a doubt, the best part of the studio. Julia and Valentina didn't just teach me exercises; they pushed me to exceed my limits, believe in myself, and enjoy every workout.”
“Top-notch place! I decided to try it out one day and I’ve been coming for almost a year and a half now. The facilities are impeccable, both the studio and the locker rooms (they have everything, you don’t need to bring a thing). The instructors and the reception staff are all lovely.”
“I’m giving B3B 5 stars, not just for the gym itself, but for the people who make it what it is. The workouts are dynamic and fun, and just when you think you’ve mastered the choreography, they switch it up with something even more challenging.”
“This is the first time I haven't had to force myself to work out; on the contrary, I actually look forward to it! Without a doubt, a place that helps you connect with yourself while training both body and mind. Highly recommended.”
“I’ve never been able to get into fitness before, but B3B changed that. The atmosphere is incredible, and it makes working out something I actually look forward to every day.”
“Without a doubt, one of the best training centers in Barcelona. The classes are very dynamic and the staff is always friendly and professional; they make you feel comfortable from the very first moment.”