Spice up your workout regimen with an hour of exercise ball-based training.

What will I learn in this class?
Find out why a fitball is a great exercise tool that offers another dimension of workout possibilities. Also known as a balance ball or therapy ball, this large, inflatable ball is used for stretching, core-strengthening and endurance exercises. Since some exercises focus on improving students’ balance, this class provides a low-impact way to elevate your heartrate—all while enjoying the sensation of bouncing on a ball! Open to all fitness levels.

What are the benefits of this class?
Long used by physical therapists, the fitball is a well-tested tool for building a stronger core, improving posture and eliminating common ailments like lower-back pain. In turn, each workout—particularly in a group setting—can help improve participants’ mental well-being.

Who will teach this class?
Kanako Nakai (pictured) is a Japan G-Ball Association-certified fitball master trainer who has been teaching fitball classes for more than 12 years. She is also a certified Strong Nation instructor and a qualified personal trainer.


  • Mon: 7:30–8:30pm
  • Fri: 7–8pm
  • The Studio
  • Free
  • Members only
  • Ages 16 & above


Booking a Class

  • Reserve from one week in advance.
  • Reservations: This email address is being protected from spambots. You need JavaScript enabled to view it. | 03-4588-0681
  • Courtesy: Members are asked to arrive before the start of the class.


  • To cancel a booking, Members must contact the Recreation Desk at least 24 hours before the class.
  • Members who fail to cancel at least 24 hours before their class will be charged ¥1,320.
  • No-shows will be charged ¥1,320.