FitSync is a private gym with five locations in central Tokyo.
For the guests and residents of hotels and residences, we provide one-on-one Muay Thai, kickboxing and boxing sessions led by a former professional fighter — on-site, by appointment only, in English or Japanese.
Authentic striking sessions a hotel fitness gym cannot offer: a flexible, on-site partnership that enriches the guest experience.
On-site Muay Thai & Kickboxing for Hotels & Residences
One-on-one Muay Thai, kickboxing and boxing sessions, delivered on-site to your guests and residents by a former professional fighter (by appointment only; English & Japanese).
No fixed costs and no upfront investment on the property's side — authentic striking added to the stay.
Value for the Property
[ Elevate the guest experience ]
A wellness offering during the stay that supports guest satisfaction, reviews and repeat visits.
[ An ancillary-revenue opportunity ]
Add wellness as a revenue line without building dedicated facilities or investing in equipment.
[ No fixed costs ]
Because it is on-site, there are no fixed costs or staffing on your side — arranged only when needed.
[ Something not found elsewhere ]
Former-pro Muay Thai, kickboxing and boxing, in English, one-on-one — an experience a hotel's own fitness gym cannot offer.
About the Instructor
Issei Shima — Founder of FitSync, former professional Muay Thai and kickboxing fighter.
Around 60 pro fights (approximately 70 bouts total across Muay Thai, kickboxing and karate). During his 3-year apprenticeship at a Bangkok Muay Thai gym, he fought at Rajadamnern Stadium — one of Thailand's two top stadiums — earning his S-Welterweight #9 ranking, and he also holds WPMF Japan Welterweight #5. As an adult he competed in Kyokushin karate, winning the Ishikawa Prefecture tournament and the Hyakumangoku Cup intermediate class.
178cm / 72kg, Ishikawa Prefecture native. Instruction available in English and Japanese.
(See the full instructor profile)
Experience at a Luxury Hotel
Since 2024, Issei has served on an ongoing basis as a dedicated coach for the guests of a top-tier luxury hotel in central Tokyo.
The name and location of the property are not publicly disclosed.
AlphaEdge, the operating company, also conducts research and development on the interface between human movement and robot motion control (about our R&D).
Partnership Models
We tailor the partnership to your operation.
[ Revenue-share / commission ]
Guest-paid, so the property carries no fixed costs.
[ Guest charge (added to the folio) ]
Delivered in line with your existing operations.
[ Monthly retainer ]
For an ongoing partnership.
[ Reserved weekly slots ]
The property reserves a set number of weekly time slots at a fixed fee, payable regardless of usage; during those slots, guests may join freely on a walk-in basis.
The specific rates, fees and frequency are designed individually for each partnership — please get in touch.
Coverage & Format
From our five Tokyo gyms, we travel across central Tokyo by appointment. On-site fees are waived within Minato, Shibuya, Shinjuku and Chuo wards.
Guests who prefer to train on their own can book a private gym by the hour through Private Gym Rental for international visitors.
Disciplines: Muay Thai, kickboxing & boxing / Personal training & strength & conditioning (English-speaking trainer)
Languages: Japanese & English
Personal training & strength & conditioning: Personal training and strength & conditioning in Tokyo with an English-speaking trainer. One-on-one sessions for strength, muscle gain, weight management, general fitness and athletic performance. Roppongi gym + on-site sessions (Minato, Shibuya, Shinjuku). Beginners welcome. No membership fees. By appointment only. Hotel visits can also be arranged on request. Personal training page
Frequently Asked Questions
How is the service delivered?
One-on-one Muay Thai, kickboxing and boxing instruction delivered on-site at your property or a location of your choice. By appointment only; sessions and frequency are designed to suit you.
What languages are supported?
Sessions are available in Japanese and English. English-only guests are well supported within the vocabulary needed for Muay Thai, kickboxing and boxing instruction. (Note: phone enquiries are handled in Japanese; for English, please use the form or email.)
What about pricing and terms?
Designed individually depending on the partnership model (commission / guest charge / monthly retainer). Please get in touch.
How is guest safety handled?
By appointment only, with a prior consultation so sessions match each guest's fitness and experience. Guests with medical conditions, who are pregnant, or who have a doctor's exercise restriction are advised to consult their physician first.
Which areas do you cover?
From our five Tokyo gyms, we travel across central Tokyo. On-site fees are waived within Minato, Shibuya, Shinjuku and Chuo wards.
Contact
We welcome enquiries from hotels and residences about partnerships and on-site sessions.
Enquiry form: Hotel & residence enquiry form
Email: info@fitsync.jp
Phone: +81-70-1354-5358 (Japanese only — for English, please use the form or email)
Individual sessions are by appointment (under the reserved-weekly-slot model, guests may join on a walk-in basis).