The Science
Humans evolved not just to survive extreme temperatures, but to thrive with exposure to heat and cold.
At Flux, the experience is grounded in research.
No IV drips, no lasers, no agro feats of superhuman
willpower, no pseudo-science.
And no time limits.
Just the proven health benefits
of heat and cold in a relaxing, welcoming, aquatic lounge.
Hot Soak
Heat up, then chill. It’s remarkably simple and sneakily good for you. The science behind heat is clear: soaking in hot water helps with pain relief, injury recovery, relaxation, and better blood flow. Share the experience in a social soaking tub with friends and next-level self-care suddenly feels more like a fun hang.
Compared with people who took baths less than twice a week, those who took baths nearly every day had a 28% lower risk of cardiovascular disease and a 26% lower risk of stroke. Harvard Health
In summary, the regular hot water bathing (HWB) protocol used in this study can induce additional effects on maximal isometric strength without compromising aerobic and anaerobic adaptations or field performance in these athletes. LIPSEM, France
Heat therapy has widespread and robust effects on vascular function, and as such, could be a viable treatment option for improving cardiovascular health in a variety of populations.University of Oregon
Compared with people who took baths less than twice a week, those who took baths nearly every day had a 28% lower risk of cardiovascular disease and a 26% lower risk of stroke. Harvard Health

In summary, the regular hot water bathing (HWB) protocol used in this study can induce additional effects on maximal isometric strength without compromising aerobic and anaerobic adaptations or field performance in these athletes. LIPSEM, France

Heat therapy has widespread and robust effects on vascular function, and as such, could be a viable treatment option for improving cardiovascular health in a variety of populations.University of Oregon

Cold Plunge
Cold is cool. Boost dopamine and burn calories while lowering your risk of disease and speeding up recovery. Energy today; health benefits tomorrow. Counterintuitively, the stressful jolt of the cold ultimately reduces cortisol (yes, the stress hormone) for legit stress relief.
Deliberate exposure to cold water results in distinct physiological responses linked to several health benefits. GeroScience
For long-lasting benefits such as lowered cortisol levels, enhanced mood regulation, and increased resilience to stress, consistent full-body cold water immersion may be beneficial. Stanford Lifestyle Medicine
Thirty-three healthy adults naïve to cold-water swimming (age range 20–45, 16 females) undertook a 20 °C 5 min whole-body bath. We measured brain connectivity and self-reported emotional state before and after cold-water immersion. Our findings showed that participants felt more active, alert, attentive, proud, and inspired and less distressed and nervous after having a cold-water bath.Bournemouth University
Deliberate exposure to cold water results in distinct physiological responses linked to several health benefits. GeroScience
For long-lasting benefits such as lowered cortisol levels, enhanced mood regulation, and increased resilience to stress, consistent full-body cold water immersion may be beneficial. Stanford Lifestyle Medicine

Thirty-three healthy adults naïve to cold-water swimming (age range 20–45, 16 females) undertook a 20 °C 5 min whole-body bath. We measured brain connectivity and self-reported emotional state before and after cold-water immersion. Our findings showed that participants felt more active, alert, attentive, proud, and inspired and less distressed and nervous after having a cold-water bath.Bournemouth University
