Heat Therapy: Why it Works and How to Maximize the Benefit

Emily Brown
3 days ago
5 min read

If you’ve ever laid down on a heated massage table and felt your entire body exhale, you already know heat therapy works. But why does it work? And what are all the different ways you can use it and benefit from it?

What Heat Actually Does to Your Body

When warmth is applied to your body, a few really useful things happen all at once.

Your blood vessels dilate, meaning blood flow increases to the area. That increased circulation brings fresh oxygen and nutrients to your muscles while helping carry away the metabolic waste that builds up during tension or exertion.

Heat also makes your muscle fibers more supple and pliable. Think of it it like warming up a rubber band before stretching it. Cold, stiff muscles are far more prone to guarding, a rubber band before stretching it. Cold, stiff muscles are far more prone to guarding, which is your nervous system’s way of bracing against discomfort. When you’re cold or tense, your body micro-contracts, and over time those repeated micro-contractions can develop into trigger points. AKA those stubborn knots that seem to live in your shoulders and neck.

Warmth interrupts that whole cycle. It tells your nervous system it’s safe to let go, lowers guarding, and makes the muscles far more receptive to work. Whether that’s movement, stretching, or massage.

The Lineup: Forms of Heat Therapy

Hot Packs - The PT Office Classic

If you’ve ever been in physical therapy, you’ve almost certainly had a hot pack laid across your back or neck before your session started. Those are moist heat packs typically gel-filled

packs heated in a hydrocollator and they’re one of the most reliable and widely used forms of

heat therapy for good reason. The moist heat penetrates deeper than a dry heating pad, and the localized application is great for targeting a specific area like a strained lower back, a sore shoulder, a tight neck. The goal in PT is the same as it is with us: get the tissue warm and receptive before the hands-on work begins, so the therapist isn’t fighting the muscle to do their job.

Heated Massage Tables - Warmth From the Ground Up

Our heated tables do something subtler but really effective. They warm your entire body from

below, passively, throughout your whole session. You’re not just getting heat applied to one

spot; your whole system is gradually warming up and staying warm as the work progresses.

This matters more than people realize. A warm body is a relaxed body. When you’re lying on a

cold table in a cool room, some part of your nervous system is focused on regulating temperature. A heated table removes that variable entirely, so your body can just... be present.

The muscles stay loose, the nervous system stays calm, and the work goes deeper with less

effort.

The Infrared Sauna - Deep Heat, Big Benefits

This is where things get really interesting. Traditional saunas heat the air around you, which in

turn heats your body. Infrared saunas work differently. They use infrared light to heat your

body directly, penetrating several inches into the tissue without the intense ambient heat of a

traditional sauna. The result is a deep, sustained warmth that many people find more

comfortable and easier to tolerate for longer sessions. The benefits are significant. Infrared heat has been shown to support cardiovascular health by mimicking some of the circulatory effects of mild exercise. It promotes deep muscle relaxation, helps with joint mobility, supports detoxification through sweating, and can have a notable effect on mood and stress levels. For people dealing with chronic tension, soreness, or fatigue, regular infrared sauna use can be genuinely transformative. Before a massage, the sauna is incredible for priming the tissue. You arrive on the table already warm, already open, already a little more at ease. After a massage is even better as it helps extend the benefits, keeping circulation elevated and giving your body extra time in that parasympathetic, rest-and-recover state.

The Home Version: Epsom Salt Baths

You don’t need a sauna or a massage table to get the benefits of heat therapy at home. A hot

bath, especially with Epsom salts. is one of the most underrated recovery tools available to

everyone, and it costs almost nothing. Epsom salts are magnesium sulfate, and while the science on how much magnesium actually absorbs through the skin is still being debated, what isn’t debated is that a hot bath is genuinely good for you. The heat increases circulation, relaxes the muscles, calms the nervous system, and can significantly improve sleep when taken in the evening. Your body temperature drops after you get out, which signals to your brain that it’s time to wind down. Think of a hot bath as a full-body hot pack. It’s not as targeted as hands-on work, but it is a lovely, accessible way to give yourself some recovery time and keep your body feeling more

open between sessions.

Staying Smart with Heat Exposure

Heat therapy is wonderful, but like most good things, it’s possible to overdo it. A few things worth keeping in mind:

✦ Stay hydrated. Heat makes you sweat, and sweating means fluid loss. Drink water

before, during, and after any heat session, sauna especially.

✦ Go slow. If you’re new to infrared saunas or hot baths, start with shorter sessions and

lower temperatures. Your body will adapt over time.

✦ Listen to your body. Lightheadedness, nausea, or feeling overheated are signs to get

out and cool down. Don’t push through those signals.

✦ Don’t skip the cool-down. This is actually important. After a sauna session, coming down

gradually helps your body regulate back to normal temperature safely.

You might have noticed we keep cold towels in our sauna room for when you step out of the sauna. That’s intentional.

A cool towel on the face and neck or even a cool shower after heat exposure is a great way to help your body return to baseline. It feels incredible, and it’s genuinely good for your circulation. The contrast between hot and cold causes your blood vessels to dilate and then contract, giving your cardiovascular system a gentle workout in the process. It’s the same principle behind why Scandinavians jump in cold water after a sauna.

Bringing It Together

Whether it’s the warmth of our table, a session in the infrared sauna before your massage, or a long hot bath at home on a Sunday evening, heat therapy is one of the simplest and most effective things you can do for your body on a regular basis. It meets you where you are, costs very little, and asks almost nothing of you except to slow down and let it work.

That’s kind of the whole philosophy around here. The more we can help your body feel safe,

warm, and cared for, the more it can let go of what it’s been holding.

That’s true on the table, and it’s true at home too. Stay warm out there. We’ll see you soon.