Contrast
Combined with the cold plunge, the hot tub creates contrast recovery — helping your muscles relax, improving circulation, and leaving your body feeling fully reset.
The Science
Why heat
actually works.
Heat is one of the oldest tools in recovery.
When your body warms up, blood flow increases and muscles begin to release.
But the real effect comes from contrast.
Switching between heat and cold creates a rapid vascular response — helping your body move, flush, and reset faster.
At Lab 33, heat is not used alone.
It's part of a controlled protocol — calibrated temperature, guided timing, and structured cycles.
Built to help your body recover with intention.
Contrast Therapy
Hot opens. Cold closes.
Vascular Activation
Hot opens blood flow. Cold compresses it. This creates a pumping effect that helps your body move and reset faster.
Inflammation Response
Switching between heat and cold triggers a controlled response — helping reduce soreness and support recovery.
System Reset
Contrast trains your nervous system. Over time, your body handles stress better and recovers with more efficiency.
Benefits
Why heat
matters.
Muscle Release
Heat helps reduce tension and prepares your body to move better.
Circulation Boost
Increased blood flow delivers oxygen and supports recovery.
Nervous System Shift
Heat helps your body transition into recovery mode.
Joint Mobility
Warmth reduces stiffness and improves range of motion.
Contrast Amplifier
Heat enhances the effect of cold — making contrast more effective.
Sleep Support
A rise and drop in body temperature helps regulate deeper sleep.
How a Session Works
The contrast protocol.
A structured sequence designed to maximize recovery.
Start warm
Raise body temperature. Prepare for contrast.
10–15 min
Go cold
Cold exposure drives a strong vascular response.
2–4 min
Repeat
Alternate heat and cold.
2–3 rounds
End on cold
Finish cold. Lock in the effect.
Opening Q2 2026 · Porto Arabia
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