North County San Diego · Open 24/7

The fastest way
to sweat
and get strong.

Two 25-minute sessions. One membership. Nothing to figure out.

Pick your 25

Sauna Cycling. Completely soaked.

25 minutes on a bike in a private infrared room. Guided audio the whole way, your heart rate on the wall. You walk out drenched and done.

Smart Strength. Completely strong.

Nine machines that set themselves before you sit down. Seat, range and load, carried over from your last session. One round, twenty-five minutes.

  • 25 minutes
  • Just follow along
  • AI-optimized
  • Live feedback
  • Safe by design
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25

Minutes. The whole thing, door to door.Minutes. Booked, preheated, hard-stopped.

93

Machines that set themselves before you sit down.Bikes in the room. Usually just you.

0

Decisions to make.Impact on your joints.

You didn't quit.
You ran out of
ninety-minute days.

You don’t need
more willpower.
You need a shorter workout.

Why it sticks
when nothing else did.

Made for a packed calendar

Nine machines, one round, full body. Twenty-five minutes from door to done.

Know exactly what to do

The screen shows the move, the light says go. No programme to write, no weight to guess.

AI-driven insights

Every rep, pound and degree of range logged, then read by AI to set your next session.

Always the right challenge

The load goes up the week you are ready for it. Never too heavy, never too easy.

Safe by design

The machine picks the weight and holds your range. Nothing to drop, nothing to strain.

Made for a packed calendar

Booked ahead and preheated. Twenty-five minutes from door to done.

Know exactly what to do

Guided audio calls every interval. Nothing to keep up with, nothing to memorise.

AI-driven insights

Your heart rate, zones and recovery read after every session — and turned into what to do next.

Always the right challenge

Your targets rise as your fitness does. You never coast, and you never blow up.

Safe by design

Zero impact on your joints. Hard-stopped at 25 minutes. Call button in every room.

Real-time feedback

Watch yourself
get stronger.
Twelve minutes
that actually
change something.

Reps, load, range and balance. Live, in front of you.The red is the effort that actually makes you fitter. Easier than that and you are just sweating. Twelve minutes in it, three times a week, is the entire dose — the screen counts them for you and tells you when to ease off. You never have to wonder whether it worked.

Chest press · set 2 of 3Live
Rep 1Working setRep 9
142lb● +6% vs last week
Range of motion 98%Left / right 51 : 49Next set +5 lb
Sauna Cycling · session 14:22Live
EasySteadyWorkingThe RedMax
YOU
156bpm● 11:40 in the red
Today’s target11:40 / 12:00
Twenty seconds to go. Then ease off — that is the whole session.

The research

The heat is doing
more than sweat.

One Finnish cohort. 2,315 men. Twenty years.

40%

Lower all-cause mortality

Four to seven sessions a week versus one.

JAMA Internal Medicine, 2015

63%

Lower sudden cardiac death

Fatal cardiovascular disease roughly halved.

JAMA Internal Medicine, 2015

66%

Lower dementia risk

65% lower for Alzheimer’s.

Age and Ageing, 2017

19+

Minutes mattered

Over nineteen beat under eleven. Ours are 25.

JAMA Internal Medicine, 2015

Observational cohort studies in traditional saunas. Associations, not proof — and infrared has thinner direct evidence.

Why two blocks, not one

Strength and cardio
work better apart.

Mix hard cardio into resistance work and you blunt the strength adaptation. It is called the interference effect. It has been in the literature since 1980.

That is the flaw in the blended circuit class. Burpees between kettlebell swings leaves you in the middle of both.

So we did not blend them. Stack them if you want — strength first, heat second.

In your pocket

It remembers,
so you don’t have to.

Every machine and every strap writes straight to your phone. AI turns it into what to do next.

Hot & Heavy app home screen showing a 12-day streak and today's bookings
Never lose momentumMiss a week and it rewards the return, not the reset.
Performance screen showing auto-tracked volume, machines used and personal records
Proof you are improvingVolume, PRs, heart rate and calories — logged without you touching anything.
Consistency screen showing an eight-week training grid and milestones
Watch it add upEight weeks on one screen, with milestones for showing up.

Two goals

Two goals.
Two blocks.

Sauna Cycling — riding in a private infrared room
HOT
Sauna Cycling

Conditioning and calorie burn. Real cardiovascular load, no joint impact.

  • Cardio is the part you skip
  • Running hurts your knees
  • You want the heart-health box ticked
  • You need one you will book again
Smart Strength — an EGYM machine mid-set
HEAVY
Smart Strength

Muscle and body composition. The block that changes what you are made of.

  • You want to be visibly stronger
  • You want to hold muscle as you age
  • You want your metabolism working
  • You want a number that proves it

Chasing fat loss? Do both — and lean on HEAVY

Cardio is not the fat-loss block and lifting is not just the muscle block. Muscle is metabolically active tissue, and keeping it is what holds body composition in place over years. Two halves of one answer.

THE STACK

Back to back. Fifty minutes. Your whole week’s training, done before a lunch break is over.

Founding members

Get in early.
Pay less than
everyone after you.

  • First workout free
  • Founding rate, locked
  • First pick of the schedule
  • Nothing to pay now
Claim my free session

Questions.

I've never really lifted. Will I be lost?

No. The machines set themselves from a strength test you do on day one, so you can't pick the wrong weight. No free-weight floor, nothing to drop, no one watching.

Is it really only 25 minutes?

Yes. One full round of nine machines. Two rounds is about 40 minutes if you want more.

Is there a trainer?

No. The AI does that job, and it knows your last twelve sessions.

Is it safe to train with nobody there?

The machines are the safety system: they set the load, hold your range and control the lowering. Cameras, call buttons, AED by the door.

Will 25 minutes actually be enough?

Yes. Thirty to sixty minutes a week produces real gains, and none of your twenty-five is spent deciding or waiting.

Is more time in the red better?

No, and we will not gamify it that way. The evidence on training distribution is clear: most of your work should sit below threshold, with a smaller dose above it. Twelve minutes in the red, three times a week, drives the adaptation. Thirty minutes just costs you Thursday. The screen shows a target, not a leaderboard.

What does sauna cycling actually feel like?

A spin session in a warm room, with guided audio the whole way. Infrared heats you, not the air, so you breathe normally. Most people are sweating inside eight minutes.

How hard do I have to go?

As hard as you want. The heat raises your cardiovascular load at any resistance, so you get there without grinding out an hour.

Will it help me lose weight?

Partly. The sweat is water, not fat, but the bike burns real calories with no joint impact. If fat loss is the goal, HEAVY does more of the work.

Is the heat safe?

For most healthy adults, yes, but heat plus exercise is a real stress. Sessions hard-stop and every room has a call button. If you are pregnant, have a heart condition or low blood pressure, talk to your doctor first.

Do I have to do both?

No. The membership covers both either way.

Can I cancel?

One click, any time. No fee, no notice period, no phone call.

When do you open, and where?

North County San Diego, 2026. Tell us on the form which area suits you. It genuinely influences where we land.

The first one’s on us.
The rest is on you.

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