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Group Fitness Classes in Red Bank, NJ

Search "group fitness classes near me" and you'll find big rooms — thirty strangers copying an instructor who's never met them. Underground Gym's classes are built the other way: small groups, a coach who knows your name and your program, and training that's tracked session by session. Our classes are for adults 40+ who want the energy of a group without disappearing into one.

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Two ways to train in a group here

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Private 1-on-1 personal training icon

Strong Again — small group personal training. Capped at 7 people. You follow your own personal program — written for your body, your level, your goals — while a coach runs the room. It's personal training with company: the closest coaching we offer, at a small-group price.

Calendar icon for PRIME 30 30-minute sessions

PRIME 30 — 30-minute strength and conditioning. One workout a day, the same at every time slot, done in 30 minutes. Bigger group energy, still coached, still tracked — built for busy adults who can't give an hour to the gym. Sessions run from early morning to evening, Monday through Saturday.

Fit Over 40 icon

Not sure which fits? That's what the consultation decides. Fit Over 40 blends both formats under one personal plan for members who want the full picture.

How it starts

Consultation — We talk through your goals, health history, and what has or hasn't worked before.

Assessment — An InBody body-composition scan and a movement screening, so your plan starts from facts, not guesses.

Your plan — You get a clear path: the right format, the right schedule, and exactly what to do next. Then we coach you through it, session by session.

Individual results vary.

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Why these classes are different

• A coach in every class. Not an instructor performing at the front — a coach who knows your program, your injuries, and your last session.

• Groups stay small. Strong Again caps at 7. PRIME 30 groups stay small enough for the coach to see every rep. Nobody trains unwatched.

• Your training is tracked. Loads logged, progress measured with repeat InBody scans. Group class, personal data.

• Built for 40+ bodies. Modifications aren't an embarrassment here — they're the program. Backs, knees, shoulders, and blood pressure are planned for, not worked around.

• Strength is the foundation. Every class is built on coached strength training — the kind that builds muscle and supports bone density after 40.

Who our classes are for

Adults over 40 who want to train with people — and be coached like individuals. Beginners are welcome: most members started after years away from exercise. If you want an anonymous room where nobody notices you're gone, we're not it. If you want a group that notices — and a coach who adjusts the workout to your body — start with a consultation.

Serving Red Bank and the surrounding towns

Our members train with us from Red Bank, Middletown, Rumson, Fair Haven, Little Silver, Shrewsbury, Holmdel, Tinton Falls, and Colts Neck. The studio is at 327 Hwy 35 in Red Bank, with morning sessions from 6 AM and evening sessions through 8 PM.

Questions, answered

I'm over 40 and haven't exercised in years. Can I join a class? — Yes — that's who our classes are built for. You start with a free consultation and an InBody scan, and we place you in the program that fits: most beginners start in Strong Again, where the group is capped at 7 and every exercise is scaled to you.

How big are the classes? — Strong Again is capped at 7 people per class. PRIME 30 runs a larger group for its 30-minute format, but sessions stay small enough for the coach to watch everyone's form. We add capacity as classes fill rather than packing the room.

What if I have a bad back, knees, or shoulders? — Tell us at your consultation — it's the normal starting point here, not an exception. Your program is written around your history, and the coach modifies exercises in class. If something needs a doctor's or physical therapist's input first, we'll say so.

Do I have to keep up with the group? — No. In Strong Again you run your own program at your own pace. In PRIME 30 everyone does the same workout design, but the weights and scaling are yours. The group sets the energy; your body sets the load.

How much do group classes cost? — It depends on the program and how often you train. Options start at $45 a week with week-to-week flexibility and no long contract. The consultation is free — we'll recommend the right program and give you exact numbers.

Where are you located? — We're at 327 Hwy 35, Red Bank, NJ 07701, serving Red Bank, Middletown, Rumson, Fair Haven, Little Silver, Shrewsbury, Holmdel, Tinton Falls, and Colts Neck. Call us at (732) 693-0287.

Start with a consultation.

Start with a consultation — free, unhurried, and honest about which class fits you.

Underground Gym · 327 Hwy 35, Red Bank, NJ 07701 · (732) 693-0287

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Ready when you are. Start with a free consultation: an InBody scan, a movement screen, and a clear plan. (732) 693-0287 · 327 Hwy 35, Red Bank, NJ 07701