Benefits
Warmth.
The benefits of the sauna
Lifespan & cardiovascular health
Large Finnish observational studies show that frequent sauna use is associated with a lower risk of cardiovascular disease and a longer lifespan from all causes. A dose-response relationship is often seen here, which means that the more frequently you go into the sauna, the more benefits you experience from it. Sauna use is also linked to a lower risk of high blood pressure, heart attacks and strokes.
Stamina
Sauna use can improve endurance by increasing blood volume and improving heat tolerance. In trained athletes, several studies show improvements in endurance and VOâ‚‚ max when the sauna is used regularly, especially after training.
Performance, power
Some studies in which very high heat exposure is combined with strength training show improvements in strength and body composition. Other studies show temporary fatigue and reduced power output when sauna is used immediately after heavy strength training. Timing is therefore important.
Recovery, blood flow & muscle growth
Sauna increases blood circulation and blood flow, which delivers oxygen and nutrients to the tissues and supports the removal of waste products after training. Research into post-exercise recovery shows mixed results, depending on the protocol. However, people frequently experience improved recovery after using certain recovery methods.
Building resilience with contrast therapy
Alternating between heat and cold improves circulation, strengthens the immune system, and builds mental resilience.
Mental health & stress
Regular sauna use is associated with a better mood and fewer symptoms of stress and anxiety. Possible mechanisms include the release of endorphins, the shift of the nervous system towards rest and recovery, and the psychological benefit of routine and ritual. Some brain imaging studies show improved relaxation without any negative impact on cognitive performance.
Sleep
Sauna appears to support good sleep via two mechanisms. Firstly, thermoregulation: to fall asleep, body temperature must drop. A sauna temporarily raises body temperature, after which the subsequent cooling can help signal that it is time to sleep. Secondly, your nervous system shifts to a calmer state after a sauna visit, making it easier to fall asleep. Therefore, a sauna is generally recommended 1–3 hours before bedtime rather than directly before sleep.
Cold.
The benefits of an ice bath
Mental resilience
Cold water is a controlled stress stimulus. The first 30–90 seconds are often the hardest. Your breathing quickens, your mind panics, and it is your job to calm down. This exercise can improve perceived stress tolerance and self-control over time.
Experienced recovery & fatigue
People generally report feeling less fatigued and more alert after cold exposure, even when performance tests do not change much. This is important in practice: how you feel affects the quality of your training, your confidence, and your willingness to train again.
Reduced muscle soreness
This is the most consistent benefit. Ice baths reduce muscle soreness in many studies and reviews. If your priority is: "I want to be able to perform better tomorrow", then cold water is one of the more reliable tools.
Lifespan
There is yet no direct lifespan data showing that ice baths extend lifespan or reduce mortality. The argument for a potential influence on lifespan is indirect: stress resilience, nervous system flexibility and potential cardiometabolic effects. Some of these are plausible, some are not yet proven, and the effect that healthy people use ice baths more often is a real point of concern.
Mood, focus and energy
Dopamine increases by as much as 250%, giving you a natural, long-lasting boost in your mood, focus and clarity.
The effects on mood are promising, but not definitive. Some studies show an improvement in mood after an ice bath, along with changes in the activity of brain networks involved in mood regulation.
Sleep
Cold in the morning can support the circadian rhythm and improve sleep. Cold in the evening can actually disrupt sleep. Some studies show minor improvements in deep sleep after cold exposure, although the evidence is limited and depends on the timing.
Light.
The benefits of red light
Improves mental health
In research, red light therapy is associated with improvements in mood, mental energy and cognitive function. The stimulation of mitochondrial energy production may play an important role in this.
Improves recovery after exercise
By supporting energy production in the cells, red light therapy can promote natural recovery after intense exertion. Research shows that it can reduce muscle soreness and accelerate recovery between workouts.
Healthier skin
Red light stimulates collagen production and supports the skin's natural repair process. This can contribute to firmer skin, better elasticity and a reduction in fine lines.
Less hair loss
Research suggests that red light therapy can stimulate hair follicles and support hair growth in certain types of hair loss. The effects have been demonstrated most strongly in hereditary hair loss.
Better blood circulation and lymphatic drainage
Red light therapy can improve local blood circulation and support microcirculation. As a result, oxygen and nutrients are supplied more efficiently and waste products are removed more effectively.
Less pain and inflammation
Red light therapy supports the natural regulation of inflammatory processes and in research is associated with a reduction in pain symptoms in muscles, tendons and joints.