New location NOW OPEN – Greenwich, CT.   More Info


At Hydrogen Fitness, we offer 80+ classes a week that cater to people of all fitness levels. These classes include Boxing, Yoga, RPM Spin, Bootcamp, and more…

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Try our classes with a free 3-day pass

yoga classes hydrogen fitness


A creative form where poses are linked together with the breath in a flowing sequence. It includes a range of standing & seated poses, balancing postures and targeted core strengthening.

Pilates Fusion

A mat-based workout utilizing the core to lengthen, strengthen, and tone your body.

Hydro HIIT

High-Intensity Interval Training. Bursts of intense activity alternated with intervals of lighter activity.

RPM Spin

High-intensity cardiovascular workout utilizing a stationary spin bike.

Sculpt and Sweat

High-intensity cardio workout utilizing weights & dumbells

Hydro Essentials

A great place to start. Hydro Essentials is our fundamental lifting 101 class. We keep the weights lighter, so we can fine-tune our form and technique. The class is 50-55 minutes and will be focussed on specifically lifting. This is a great class for everyone, from beginner to advanced lifters looking to work proper form and technique, and get a great full-body pump!

spin classes hydrogen fitness
olympic weightlifting training small group classes at Hydrogen Fitness

Small group training (SGT)

A semi-private personal training with only 4 people max in a group. Training will increase the level of coaching focusing on an elevated level of strength through barbell exercises and Olympic-style lifting. It has its own weekly schedule giving participants nearly double the session count options for the week.

Vinyasa yoga

Vinyasa yoga is the synchronizing of physical movement with your breath. This technique allows you to create a deeper absorption of awareness through rhythmic movement and meditation.


Combination of Pilates, Barre & Yoga utilizing your core and breath to strengthen, condition, and tone the body. Improves overall core strength and flexibility.


A 45-minute class overseen by our boxing coach. It’s a combination of strength work and cardio conditioning to strike a total body balance workout. Wraps and boxing gloves are provided.


Combination of high-intensity cardiovascular and strength training alternating between high and low-intensity exercises. Instructors will use free weights, resistance bands, mats, and so on.

Man boxing at Hydrogen Fitness
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Try our classes free for 3 days!

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Frequently asked Questions

Yes, of course! Get in touch with us, and we will arrange the details after booking an appointment.

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