The Fitness Function

The Fitness Function The Fitness Function is an independent fitness studio in Penn Street, offering a wide variety of sma We also have a third studio; our new indoor cycling studio.

The Fitness Function is a privately-owned fitness studio in Penn Street, focusing on small group training and group exercise classes. A variety of workouts are available to suit all fitness levels and goals. In one studio we teach a variety of mat-based and small equipment classes, such as Matwork Pilates, Yoga, Kettle Bell Training, Body Blast, PT Super Sculpt, Freeform and Trigger Point Pilates. In another studio we teach Gravity classes, which are focused, time-efficient workouts on a machine called the Total Gym. Exercises are performed on different inclines and work every muscle using your own body’s resistance against gravity. In just 45 minutes, you get a top-to-toe workout that tones, strengthens and improves flexibility – and hopefully you have fun too! Here we teach a variety of Bike Fit classes that will burn calories, strengthen muscles and improve cardio health. Numbers in all our classes are limited to provide an experience that is a blend of personal training and a traditional exercise class. This ensures clients get a good level of attention from the fully trained instructors, enabling them to better achieve their goals and do all the exercises correctly and effectively. At the Fitness Function we have no membership charges or joining fees – simply pay for the classes you wish to attend and mix and match as much as you like! To find out more and to book your FREE TRIAL CLASS please visit us at www.thefitnessfunction.com, email us at [email protected] or call us on 01494 416171. Like our page and share with all your friends!! We look forward to meeting you all soon!

Gravity Pilates  StrongPush your limits and build strength with this powerful reformer-based workout. Designed to challe...
16/09/2026

Gravity Pilates Strong
Push your limits and build strength with this powerful reformer-based workout. Designed to challenge your muscles and improve endurance, this class uses gravity and resistance to create a dynamic, full-body experience. Expect controlled, high-intensity sequences that target your core, arms, and legs while enhancing stability and posture. Perfect for those looking to tone, strengthen, and feel empowered.

Join us every Wednesday night at 7.15pm and get strong!

Book your space today - limited spaces available! Sign up now with the link below:

https://thefitnessfunction.clubright.co.uk/MemberArea/Bookings

Why choose Gravity Total Body Workouts?1. True full-body training in every session�Gravity Total Body Workouts engage mu...
25/05/2026

Why choose Gravity Total Body Workouts?
1. True full-body training in every session�Gravity Total Body Workouts engage multiple muscle groups at once—so clients get strength, core, mobility, and conditioning in a single, efficient session.
2. Smarter resistance with bodyweight training�Using incline and gravity-based resistance, every workout automatically scales to the user—making it accessible for beginners yet challenging for advanced users.
3. Functional results that transfer to real life�Movements are designed to improve balance, coordination, and everyday strength—not just aesthetics.
4. Low-impact, high results�Perfect for a wide audience—from rehab clients to high-performing members—thanks to smooth, joint-friendly movement.
5. Dynamic, never boring�Blending strength, cardio, and core training, sessions stay fresh, engaging, and progressive—keeping retention high and boredom low.

Your bookings page link

https://thefitnessfunction.clubright.co.uk/MemberArea/Bookings











Wednesday Nights is GRAVITY PILATES STRONG = low-impact, high-intensity strength training on the  Total Gym Reformer — d...
15/05/2026

Wednesday Nights is GRAVITY PILATES STRONG = low-impact, high-intensity strength training on the Total Gym Reformer — delivering stronger bodies, better movement, and visible results.

💥 Why choose GRAVITY Pilates STRONG?
STRONG isn’t your average Pilates class — it’s Pilates with purpose.
🔹 1. Builds real, functional strength
Using the Total Gym Reformer, every move challenges muscles through both push and control phases, helping build strength, endurance, and stability across the whole body.
👉 Think: stronger core, glutes, arms and back — not just “toning”

🔹 2. Full-body workout in one session
Gravity Reformer Pilates engages multiple muscle groups at once, delivering a complete workout rather than isolating muscles.
👉 Clients feel worked head-to-toe — in a smarter, more efficient way

🔹 3. Low impact, high intensity
The Total Gym Reformer reduces load on joints while still creating resistance, making it tough on muscles but kind on the body.
👉 Perfect for:
* Beginners to advanced
* Rehab / return to training
* Members wanting intensity without impact

🔹 4. Improves posture, balance & control
The moving carriage and instability force constant core activation and alignment, improving posture and coordination.
👉 Clients don’t just get stronger — they move better

🔹 5. Delivers lean, athletic results
Gravity Reformer work combines resistance and stretch to build long, lean muscle rather than bulk.
👉 That “strong but sculpted” look clients want

Book now and join us for a session which will impact your health and well-being.

https://thefitnessfunction.clubright.co.uk/MemberArea/Bookings

Address

R3 Rapide Studios, De Havilland Court Penn Street
Amersham
HP70PX

Opening Hours

Monday 9am - 1pm
6pm - 9:15pm
Tuesday 9am - 1:15pm
6pm - 8:30pm
Wednesday 9am - 2:15pm
6pm - 9:15pm
Thursday 9am - 1:30pm
6pm - 9pm
Friday 9am - 1:30pm
Saturday 8:30am - 11:30am

Telephone

+441494416171

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