3D Fitness

3D Fitness Irvine and Tustin’s premier boutique fitness studio! We offer high intensity group circuit training

We are a boutique fitness studio offering HIIT circuit classes in a fun and non-intimidating environment. In the space of 45 minutes you will push, pull, jump, ski, cycle, slam, row and much more. We change our workouts daily to keep things fresh and to keep you motivated! Originally founded in Sydney, Australia, 3D Fitness is the 'brain child' of husband and wife team Chris and Nancy Hargreave. A

fter meeting at their local boxing gym, it wasn't long before they were married and began working on plans to open their own fitness studio. They believe that Chris' experience in the fitness industry, coupled with Nancy's background in business and customer service, gives them the perfect combination to offer a boutique and personalized training experience to their members.

Scale not moving? Doesn’t mean you’re not making progress.As you lose weight, your body adjusts and needs fewer calories...
08/09/2026

Scale not moving? Doesn’t mean you’re not making progress.

As you lose weight, your body adjusts and needs fewer calories — so the same effort does a little less over time. Cravings creep up too. That’s biology, not a lack of willpower.

And if you’re strength training, you might be losing fat and gaining muscle at the same time. The scale won’t show that. Your clothes and your strength will.

A stalled scale isn’t a reason to quit. It’s a reason to look closer.

Think you need to train more? You probably don’t.The research keeps saying the same thing: 2-3 focused sessions a week i...
07/29/2026

Think you need to train more? You probably don’t.

The research keeps saying the same thing: 2-3 focused sessions a week is plenty to build real strength and muscle. More isn’t the secret. Consistency is.

Show up, put in the work, go home.


i

07/26/2026

Your week starts here!!
3D Fitness

You can train hard and eat right and still spin your wheels if you’re running on 5 hours of sleep. 😴There’s a study on t...
07/15/2026

You can train hard and eat right and still spin your wheels if you’re running on 5 hours of sleep. 😴

There’s a study on this that blew us away. Two groups of dieters, exact same calories. The short-sleep group (5.5 hrs) lost 60% more of their weight as MUSCLE instead of fat. Same food, same effort — worse result. All because of sleep.

You’ll still make progress on short sleep — just probably not as much as you could. If you’re putting in the work anyway, might as well get the full return on it.

Tag your friend who’s always up til 1am scrolling 👇

06/13/2026

We knew this wouldn’t keep you down for long! For all those who have been asking here is proof Allison is one strong mama! So happy to see how well you are doing! Allison Michelle ❤️❤️❤️

We’re excited to introduce our new Referral Program — and it’s a win-win!! So if someone’s been thinking about trying us...
04/21/2026

We’re excited to introduce our new Referral Program — and it’s a win-win!!
So if someone’s been thinking about trying us out, this is the perfect time!

Love your classes? Invite a friend to join the 3D Fitness community!

Want more info?
Type referral in the comments!

A little thank you for spreading the word—coming soon!!
04/13/2026

A little thank you for spreading the word—coming soon!!

Address

14712 Franklin Avenue Unit F
Tustin, CA
92780

Opening Hours

Monday 6am - 12pm
4pm - 7:30pm
Tuesday 6am - 12pm
4pm - 7:30pm
Wednesday 6am - 12pm
4pm - 7:30pm
Thursday 6am - 12pm
4pm - 7:30pm
Friday 6am - 12pm
4pm - 7:30pm
Saturday 7am - 12pm
Sunday 7:30am - 11am

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