
iDFITNESS · Group strength training · Windsor
Be yourself. Get strong. Together.
The best place to train in Windsor. Small group strength training with real coaches and a community that has your back, so you get strong, fit and balanced, and enjoy every session.
Why group strength training
The smartest way to train.
Group strength training gives you the coaching and programming of personal training, with the energy and accountability of a team. It’s how our members get results that last.
Stronger for life
Building muscle and strength keeps you capable, protects your joints and helps you move well for decades, not just for summer.
Coached every rep
A real coach on the floor every session, so your technique is right, your weights are right and you train with confidence.
Programmed progress
Structured, individualised programming means you get stronger week by week, instead of guessing in a busy commercial gym.
Accountability that sticks
Your coach and your group notice when you’re missing. That’s why our members keep showing up, and keep seeing results.
The shared energy
Training alongside people who cheer you on makes hard sessions feel good. You’ll leave every session with a smile.
Balanced body and mind
Strength, conditioning and recovery in the right mix, so you feel better at work, at home and in everything you do.
Ways to train
Built around your life.

Group strength training
Small groups, individual programmes and a coach with you every rep. The heart of iDFITNESS.
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Performance classes
PULSE, DEFINE, LIFT & RESTORE and Zone 2 engine builder.
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Personal training
Bespoke coaching for your goals, your injuries and your timeline.
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Nutrition coaching
Simple, sustainable nutrition with check-ins from your coach.
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Strength for all
Every age, every gender, every starting point. Built around you.
Find out moreThe 21-day strength kick-start
Three weeks to feel like you again.
- Unlimited group strength training and performance classes
- Goal-setting session with your coach
- Entry-level nutrition set-up
- InBody body composition scans to track your progress
- Sessions on the hour, early mornings to weekends
Booked and paid securely through TeamUp. At the end of your 21 days we’ll take you through your membership options.

The shared experience
Better together.
Training is better shared. Our members cheer each other on, celebrate every personal best and turn up for each other. From summer games and marathons to retreats abroad, iD is a community you’ll want to be part of.




Member stories
“The small group PT feels personal. I’m stronger, happier, and proud of what I’ve achieved, with support every step of the way.”Jess, Windsor
Part of the iD Group
Train here. Travel with us.
iD RetreatFitness retreats & experiences
Take your training further with iD Retreat: fitness retreats, corporate team days and iD Holidays.
Explore iD Retreat
Golf N Yachts · Booking nowGolf & Sail in Mallorca
3–6 July 2027. Three courses, one catamaran, four days on the water. From £2,760pp.
Book your cabinFind us
In the heart of Windsor.
iDFITNESS Windsor
Trinity Yard, 59 St Leonards Road, Windsor SL4 3BX
- Monday to Friday
- 6am – 9pm
- Saturday
- 7am – 1pm
- Sunday
- 7am – 11am
The iD Group
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