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Check How You Feel Before You Go In
Start with a quick honest check-in on how you feel that day. If you feel unwell, unusually tired, dizzy, weak, or short of breath, it is safer to skip the sauna.
A sauna can put extra stress on the body, especially when you are already run down. If you have had a poor night’s sleep or feel dehydrated, consider postponing your session.
Look Out for Illness or Infection
Do not use a sauna if you have a fever, vomiting, diarrhoea, or any infection that could worsen with heat. These symptoms can mean your body is already struggling to regulate itself.
If you have a cold, flu, chest infection, or a skin condition that may be aggravated by heat, take extra care. When in doubt, wait until you are fully recovered or speak to a healthcare professional.
Review Any Medical Conditions
Some health conditions make sauna use less suitable, including heart disease, uncontrolled high blood pressure, and certain breathing problems. If you have a long-term condition, check that sauna use has been approved by your GP or specialist.
People with diabetes should be especially cautious if they are prone to low blood sugar or nerve problems. If you have any condition that affects sweating, circulation, or temperature control, assess your risk carefully before entering.
Think About Medicines and Alcohol
Some medicines can affect hydration, blood pressure, or how your body handles heat. These may include diuretics, beta blockers, antidepressants, and certain antihistamines.
Do not use a sauna after drinking alcohol. Alcohol can increase dehydration, impair judgement, and make it harder to notice warning signs such as dizziness or nausea.
Check Your Hydration and Energy
You should feel well hydrated before a sauna session. A dry mouth, dark urine, headache, or feeling faint can all suggest you need more fluids first.
It is also sensible to avoid the sauna if you have not eaten for a long time. Low energy levels can make you more likely to feel weak or light-headed in the heat.
Know the Warning Signs During the Session
Even if you feel fine at the start, pay attention to your body throughout the session. Leave straight away if you feel dizzy, nauseous, unusually hot, confused, or your heart is racing.
There is no benefit in pushing through discomfort. A safe sauna session should leave you feeling relaxed, not unwell.
Make a Simple Personal Safety Check
Before each session, ask yourself a few basic questions: Am I well today? Am I hydrated? Have I had alcohol? Do I have any condition or medicine that makes heat risky?
If the answer to any of these raises concern, it is best to wait. A cautious approach is the safest way to enjoy sauna use in the UK.
Frequently Asked Questions
Sauna safety self-assessment before each session is a quick personal check of your health, hydration, and readiness to use a sauna safely before entering.
It helps you identify risks such as dehydration, illness, dizziness, or medications that may make sauna use unsafe that day.
Everyone should complete sauna safety self-assessment before each session, especially people with heart conditions, pregnancy, low blood pressure, or recent illness.
Do not use the sauna if you have chest pain, fever, shortness of breath, severe fatigue, dizziness, vomiting, or feel unwell.
Confirm you have had enough fluids, your urine is not dark, and you are not thirsty, lightheaded, or dehydrated before entering.
Some medications can increase overheating, drowsiness, dehydration, or blood pressure changes, so review your medications before each session.
Yes, pregnancy should be considered carefully, and pregnant individuals should follow medical advice before using a sauna.
If you have low, high, or unstable blood pressure, check how you feel and follow medical guidance before entering the sauna.
If you feel dizzy during sauna safety self-assessment before each session, do not use the sauna and rest, hydrate, and seek help if needed.
Yes, recent intense exercise can increase overheating and dehydration risk, so allow time to cool down and rehydrate before sauna use.
Open wounds, burns, skin infections, or irritated skin may make sauna use unsafe or uncomfortable, so assess these before each session.
It usually takes only a few minutes, long enough to check your symptoms, hydration, medications, temperature tolerance, and overall readiness.
If the self-assessment suggests risk, skip the sauna, cool down, hydrate, and consider medical advice if symptoms persist or are severe.
Yes, alcohol can impair judgment, worsen dehydration, and raise overheating risk, so avoid sauna use if you have been drinking.
Older adults and young children may be more sensitive to heat, so age-related caution is important during sauna safety self-assessment before each session.
Yes, if you have a chronic condition such as heart disease, diabetes, asthma, or epilepsy, you should assess your risk before each session.
Check that the sauna temperature, ventilation, and session length are appropriate and that you are not already overheated before entering.
Yes, significant fatigue can reduce your ability to tolerate heat and recognize warning signs, so consider skipping the sauna if you are exhausted.
Chest pain, fainting, severe dizziness, confusion, or trouble breathing require immediate medical attention and no sauna use.
It should be repeated before every sauna session because your health, hydration, medications, and fatigue level can change from day to day.
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