暗闇ボクシングフィットネスを中心に、都市型スタジオを展開するフィットネスブランド。
Compare b-monster branches by price, access, and trial options.
| Brand | Locations | Price from | Reviews | Trial branches |
|---|---|---|---|---|
| b-monster | 9 | ￥11,000 | 0 | 0 |
| 145 | ￥10,450 | 0 | 141 | |
| 458 | ￥8,800 | 0 | 458 |
b-monster monthly membership fees range from ￥11,000 to ￥11,000 based on plan and location (from FitnessGym.jp listing data). Pricing varies by gym type — personal training studios run significantly higher than 24h self-service gyms. Initiation fees, facility charges, and add-on options may apply on top of the base rate. Confirm exact costs during a trial or facility tour.
0 of 9 b-monster locations on FitnessGym.jp offer trial visits. A typical trial includes a facility walkthrough, equipment introduction, and plan and pricing overview with staff. Advance booking by phone or online is usually required. Bring workout clothes, indoor shoes, a towel, and photo ID.
FitnessGym.jp lists 9 b-monster locations across 5 prefectures in Japan. Use the prefecture and city navigation on this page to find branches near you, or search by nearest station.
The standard process is: ① book a trial or tour → ② facility walkthrough and plan overview → ③ complete registration forms → ④ submit photo ID and payment method → ⑤ pay the initial fee. Online pre-registration is available at most locations. Bring photo ID (driver's license, My Number card, or Residence Card for foreign nationals) plus a credit card or Japanese bank account details.
For month-to-month plans, submitting cancellation by the 15th or last day of the month typically means membership ends at the close of the following month. Cancellation is usually possible at the front desk, via the gym's app, or through the member portal. Annual or prepaid multi-month contracts may carry a prorated early termination fee. Check the specific gym's FitnessGym.jp page for exact cancellation terms.
b-monster's target audience, program style, and gym atmosphere are detailed in the gym descriptions and member reviews on this page. A trial session is the most reliable way to assess fit before committing. For side-by-side comparisons with nearby alternatives, use the comparison table on this page.
Member reviews on FitnessGym.jp for b-monster cover equipment quality, staff responsiveness, station access, cleanliness, and value for money. Read them alongside the pricing breakdown and trial availability details to make a well-rounded decision before booking a visit.
Yes. B-MONSTER is a dark boxing fitness program using punching bags and mitts — it is not a sparring gym. No boxing experience is needed; staff explain basic punching combinations at your first session. It is designed for people who want a high-intensity, full-sweat workout.
B-MONSTER's studio combines music, lighting, and visual effects for an immersive atmosphere. You train to DJ music in a darkened room. The dim lighting removes self-consciousness — beginners can focus on movement without feeling watched. Your eyes adjust before the class starts.
B-MONSTER offers unlimited monthly plans and drop-in options. Monthly unlimited membership typically runs ¥10,000–¥15,000 depending on the studio and plan. First-trial pricing is often discounted (around ¥500–¥1,000), letting you experience the class before committing to membership.