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The 5th Pillar to Live Long and Well is exposure to heat and cold (i.e., sauna, cold plunge).  There is strong evidence supporting the idea that exposure to heat and cold can positively affect both longevity and quality of life. This isn't just wishful thinking; it's backed by credible scientific studies.

Practical Takeaways

The great news is that incorporating these practices into your routine is relatively simple and doesn’t require expensive equipment.

Sauna Tips

For heat exposure, spending 15 to 20 minutes in a sauna a few times a week can be very beneficial. While saunas may not be as easily accessible to everyone, many gyms and wellness centers offer them.

Cold Exposure Tips

Cold exposure is even more accessible. You can achieve the benefits with a cold shower or by adding a few bags of ice to your bathtub. Just three to five minutes in a cold environment a few times a week can make a significant difference.

My Routine

For those interested in practical application, I typically start my day with a cold plunge and end it with a sauna session. This routine helps me feel invigorated in the morning and relaxed before bed.

Historical Context

Heat and cold exposure have a long history. Saunas originated in Finland about 2,000 years ago and were used for relaxation and pleasure. The Finns even used mobile saunas during World War II. Similarly, cold exposure has ancient roots, with historical records suggesting its use as far back as 3500 BC.

Sauna Benefits

1. Reduction in High Blood Pressure: A Finnish study with a 25-year follow-up found that regular sauna use significantly lowered the risk of developing high blood pressure.
2. Lower Risk of Heart Disease and Cardiovascular Death: Another Finnish study observed that regular sauna users had a reduced risk of sudden cardiac death and heart disease.
3. Reduced Cognitive Decline: Regular sauna use was associated with a lower risk of cognitive decline and dementia.
4. Improved Mood and Depression: Studies have shown that sauna sessions can improve mood and alleviate symptoms of depression.

Cold Exposure Benefits

1. Soft Tissue Injury Treatment: Cold exposure has a long history of being used to treat injuries like sprains and strains.
2. Improved Exercise Recovery: Studies, including meta-analyses, have found that cold exposure aids in faster recovery after intense exercise.
3. Enhanced Mood: Cold exposure can significantly improve mood, as shown by various 
4. Metabolism Boost: Cold exposure activates brown fat, which helps burn calories and improve metabolism.

Conducting Your Own Experiment

1. Baseline Measurement: Assess what you want to improve (e.g., sleep, mood, blood pressure) and measure it for a week.
2. Intervention: Incorporate either a cold shower or sauna  for 2-4 weeks
3. Reassess: Measure the same parameters to see if there's any improvement

Conclusion
Exposure to heat and cold can help us live long and well. I encourage you to try it out and see the benefits for yourself. Th