If you’ve followed my journey for a while, you’ll know I’m always looking for practical ways to support my body alongside medication and medical advice. Living with chronic illness means there isn’t one magic solution, but there are things that can help improve how we feel and function.

Recently, Polar sent me one of their Steam Pods and an Ice Bath to try.

The Steam Pod heats up surprisingly quickly and, if you don’t have the space or budget for a permanent steam room or traditional sauna, it’s a much more affordable way to experience heat therapy at home. While it doesn’t quite replicate the experience of sitting in a full-sized sauna or steam room, it’s a great alternative for people wanting to introduce heat therapy into their routine without spending thousands of pounds.

The real reason I’m excited isn’t the equipment itself—it’s the growing body of research into heat therapy and cold exposure, particularly for people living with chronic illnesses.

Heat Therapy: More Than Just Relaxation

Most people think saunas are simply somewhere to unwind, but inside your body something much more interesting is happening.

As your core temperature rises, your heart rate increases in a similar way to moderate exercise. Blood vessels dilate, circulation improves, and oxygen and nutrients are delivered more efficiently around the body.

For many people with chronic illness, movement can be difficult. Heat therapy provides some of the cardiovascular benefits of gentle exercise without placing additional stress on painful joints or fatigued muscles.

Your Cells Produce Protective Proteins

One of the most fascinating discoveries is the production of Heat Shock Proteins (HSPs).

These proteins act like tiny repair crews inside your cells. They help damaged proteins refold correctly, protect cells from stress and may reduce some of the damage caused by chronic inflammation.

Researchers are investigating Heat Shock Proteins in conditions involving chronic inflammation, autoimmune disease and neurodegenerative disorders because they appear to help improve cellular resilience.

While they’re not a cure, supporting this natural repair process could help the body cope with ongoing stress.

Better Blood Flow Means Better Recovery

Improved circulation means more oxygen reaches muscles and tissues while waste products are removed more efficiently.

Many people report reduced muscle stiffness, less joint pain and faster recovery after using a sauna regularly.

For conditions involving chronic pain or muscle tension, this increased blood flow can make a noticeable difference.

Supporting Mitochondria – Your Body’s Energy Factories

One area that particularly interests me is mitochondrial health.

Mitochondria are responsible for producing ATP, the energy currency every cell uses.

Many chronic illnesses, including autoimmune conditions, are associated with reduced mitochondrial efficiency.

Heat stress appears to stimulate mitochondrial adaptations, encouraging cells to become more efficient at producing energy over time.

For those of us living with constant fatigue, anything that supports healthier mitochondria is worth paying attention to.

What About Inflammation?

Inflammation is incredibly complex.

A single sauna session temporarily increases inflammatory markers because the body recognises heat as a controlled stress.

However, regular use appears to lower chronic, low-grade inflammation over time.

Scientists believe this happens because repeated exposure teaches the body to become more resilient, reducing the excessive inflammatory response that contributes to many chronic diseases.

Then Comes the Cold…

Jumping into cold water afterwards might sound completely mad, but there’s good science behind contrast therapy.

Cold water causes blood vessels to constrict, helping reduce swelling and inflammation.

When you warm back up afterwards, fresh blood rushes back into the tissues.

This alternating cycle acts almost like a pump for your circulation.

Many people also experience reduced muscle soreness and faster recovery.

Cold Exposure and the Nervous System

Cold water stimulates the vagus nerve, an important part of the parasympathetic nervous system—the body’s “rest and recover” mode.

Many chronic illnesses involve dysfunction of the autonomic nervous system.

Gentle, controlled cold exposure may help improve resilience and regulate stress responses over time.

It can also trigger the release of noradrenaline and dopamine, chemicals linked to improved alertness, mood and focus.

Brown Fat Activation

Cold exposure also activates brown adipose tissue, often called brown fat.

Unlike ordinary body fat, brown fat burns energy to produce heat.

This process can improve metabolic health and insulin sensitivity while increasing energy expenditure.

Although this isn’t a weight-loss trick, it’s another example of how cold exposure influences whole-body health.

Why Combining Heat and Cold Works So Well

Alternating between heat and cold creates what’s known as hormesis.

Hormesis is the idea that small, controlled stresses make the body stronger.

Instead of overwhelming your body, these short periods of heat and cold encourage it to adapt by improving circulation, strengthening cellular repair systems, supporting healthy mitochondria and making the nervous system more resilient.

Think of it as training your body’s ability to recover.

A Few Words of Caution

Heat and cold therapy aren’t suitable for everyone.

If you have heart disease, uncontrolled high blood pressure, severe Raynaud’s syndrome, are pregnant, or have certain neurological or vascular conditions, speak to your healthcare professional before trying contrast therapy.

People with autoimmune diseases should also introduce heat and cold gradually. Everyone responds differently, and what helps one person may worsen symptoms for another.

Always listen to your body.

My Thoughts

The Polar Steam Pod isn’t a replacement for a proper steam room or traditional sauna, but it offers an accessible, affordable way to enjoy many of the benefits of heat therapy at home. Combined with the Polar Ice Bath, it provides an easy way to try contrast therapy without needing expensive spa memberships or home renovations.

For me, this isn’t about chasing miracle cures. Living with chronic illness has taught me that recovery comes from consistently doing lots of small things that support your body.

Good sleep.

Nutritious food.

Gentle movement.

Stress management.

Heat.

Cold.

None of these are cures on their own—but together, they can help build a body that is a little more resilient, one day at a time.

Disclaimer: This article shares current scientific understanding and my personal experience. It should not replace medical advice, diagnosis or treatment. Always discuss new therapies with your healthcare professional, particularly if you have an underlying medical condition or take medication.