Sauna & Cold Plunge

Are They Worth It for Recovery and Performance?

Ice baths. Saunas. Cold plunges.

They’re everywhere right now.

From athletes to influencers, everyone seems to be using them.

But the real question is:

👉 Do they actually help… or are they just hype?

What Are Sauna and Cold Plunge?

Let’s keep it simple:

• Sauna → heat exposure

• Cold plunge → cold water immersion

Both are forms of controlled stress on the body.

Used properly, they can support recovery.
Used randomly, they’re just uncomfortable.

The Key Idea: Stress + Adaptation

Your body adapts to stress.

• Training = stress

• Recovery = adaptation

Sauna and cold exposure add another layer:

👉 They create stress → your body adapts

But they’re not magic.

Benefits of Sauna 🔥

Sauna use can support:

• Relaxation

• Improved circulation

• Reduced muscle tension

• Recovery between sessions

It can also:

👉 Help shift your body into a more relaxed, recovery-focused state

Some evidence also links regular sauna use to improved cardiovascular health.

Benefits of Cold Plunge ❄️

Cold exposure can:

• Reduce muscle soreness (short-term)

• Help you feel more alert

• Provide a mental reset

👉 This is why it’s often used after intense sessions or competitions

What They DON’T Do

Let’s be clear:

👉 They don’t replace:

• Structured training

• Good nutrition

• Quality sleep

And they’re not a shortcut to:

• Fat loss

• Muscle gain

Can Cold Plunges Affect Muscle Growth?

This is where it gets important.

Cold exposure immediately after strength training may:

👉 Reduce the muscle-building response

Why?

Because it can blunt the natural inflammation your body uses to:

• Repair muscle

• Build strength

👉 Translation:

• Useful in some situations

• Not ideal after every strength session

When Should You Use Them?

❄️ Cold Plunge

Best used:

• After competitions

• During intense training blocks

• When reducing soreness is the priority

Avoid:

• Right after strength sessions (if muscle growth is the goal)

🔥 Sauna

Best used:

• After training

• On rest days

• To support relaxation and recovery

👉 Less risk of interfering with training adaptations

🔁 What About Contrast Therapy?

You might have seen people alternating between:

👉 Sauna → cold plunge → repeat

This is known as contrast therapy.

The idea:

• Heat increases blood flow

• Cold constricts blood flow

👉 Alternating between the two may help:

• Circulation

• Recovery perception

• Relaxation

That said:

👉 Evidence is still limited, and most benefits are likely similar to using each method individually.

🧠 The Mental Side

Sauna and cold exposure aren’t just physical.

They can also:

• Build mental resilience

• Improve mood

• Create a sense of routine

Cold exposure in particular can feel challenging…

👉 Which is exactly why people find it rewarding.

What About Fat Loss?

Neither sauna nor cold exposure directly leads to fat loss.

👉 Fat loss still comes down to:

• Calorie balance

• Consistency

🔬 The Science Behind It

Both sauna and cold exposure work by placing controlled stress on the body.

👉 Your body then adapts over time.

Heat Exposure (Sauna)

Sauna increases your core temperature, which can:

• Improve blood flow

• Raise heart rate

• Stimulate heat shock proteins

👉 These help:

• Protect cells

• Support recovery

• Improve resilience to stress

Cold Exposure (Cold Plunge)

Cold exposure triggers:

• Vasoconstriction (narrowing of blood vessels)

• Reduced inflammation (short-term)

• Nervous system activation

It can also increase:

• Adrenaline

• Dopamine

👉 Which is why you often feel more alert afterwards

The Trade-Off

👉 Not all stress is beneficial at all times.

• Strength training → needs inflammation to adapt

• Cold exposure → can reduce that response

👉 So timing matters.

What This Means for You

👉 Use these tools with intention:

• Recovery focus → both can help

• Muscle growth focus → be selective with cold exposure

👉 The goal isn’t to avoid stress—it’s to apply the right stress at the right time.

⚠️ Common Mistakes to Avoid

• Staying in too long

• Going too extreme too quickly

• Using it when already dehydrated

• Treating it as a “fix” instead of a tool

👉 More is not better.

The Coached FITT Takeaway 🧡

Sauna and cold plunges are tools.

👉 Not shortcuts
👉 Not essentials

If your basics aren’t in place:

• Training

• Nutrition

• Sleep

👉 These won’t make a difference.

But if everything else is dialled in?

👉 They can be a useful addition.

Final Thought

👉 Focus on what matters most first.

Then layer in tools like sauna or cold exposure if they support your routine.

Want Help Structuring Your Training & Recovery?

At Coached FITT, we focus on:

• Smart training

• Proper recovery

• Sustainable progress

👉 Send us a message and we’ll help you get it right.