Heat Training and Heat Acclimation
Preparing for an event in the heat, such as the Marathon de Sables? Performance in the heat can be significantly impaired through the impact of an increase in body temperature, as well as an elevated risk of dehydration.
Prepare for the Marathon des Sables
Conditions in Morocco for the Marathon des Sables are generally hot, and have been known to reach 50C. So it is wise to do all you can to prepare.
Every year for the past 11 years we have helped people prepare in our environmental chamber. We set the conditions to ~40C and 30% humidity, to match likely conditions in the desert. Regular sessions in the chamber causes several physiological adaptations that can reduce the adverse effects of heat on exercise performance.
We also include an assessment of sweat sodium concentration, and help you to optimise your hydration strategy based on your sweat rate and sweat sodium concentration.
Hear from people who have completed the race...
"The race was unbelievable, the toughest and most exhilarating race I’ve done. Pushed me to and beyond my limits. I had a rough thought of coming in around 250th based on an initial field of 1000+ and I finished in 86th! On Cloud 9! The sessions definitely helped me with the heat, managing my water & electrolytes."
"Steve, Rhona, Meg and the team provided an outstanding and personal service within a fantastic and professional facility. I cannot praise highly enough."
At-Home Heat Acclimation Consultancy
If you’re preparing for an event in hot conditions but can’t access our on-site heat chamber, our At-Home Heat Acclimation Consultancy offers tailored guidance to help you adapt safely and effectively using your own training environment.
What’s Involved
Through a 30 minute initial consultation (an on-line call via Teams), we’ll review your event goals, current training setup, and available equipment to design a personalised heat acclimation plan. This may include strategies such as:
- Controlled indoor sessions utilising your home-based heat training setup with adjusted clothing or environmental conditions
- Post-exercise passive heat exposure methods
- Monitoring and managing hydration and recovery
- Guidance on tracking physiological responses (e.g. tympanic temperature, heart rate, perceived exertion, body mass changes)
You’ll also receive advice on an individual hydration strategy to optimise performance and reduce risk during both training and competition.
Ongoing Support
Our team will provide remote monitoring and feedback, helping you refine your approach and progress safely through your heat adaptation programme. Mid-way through your plan we will have a call to review your data, check on progress, answer any questions you might have, and refine the second half of your plan as necessary. At the end of your heat acclimation period we will have a final call to review your progress and discuss your data and approach for the event, covering things such as pacing strategy, cooling ideas and hydration strategy.
Timing
Most commonly people do heat acclimation during the 2 – 3 weeks before departure for their event. However it is also possible to complete an acclimation block a few weeks or even months before an event, and depending on what heat tools you have access to, a longer heat acclimation block can be beneficial.
Our ideal scenario for you to achieve maximal adaptations is to complete a total of 10-15 sessions, but a good level of acclimation can be achieved with fewer heat exposures. Our general advice is the more sessions you can complete the better. This may not be possible/necessary for everyone, so we are happy to discuss your individual situation and needs and come up with an appropriate plan.
Who is it for?
Anyone who is preparing for an event in the heat but cannot access our in-person service. There is also evidence emerging that the physiological adaptations to exercising in the heat can provide benefits when exercising at altitude, as well as when exercising in temperate conditions.
What do I need?
Access to some form of heat stimulus, such as sauna, hot bath, hot pod yoga, room you can heat up and exercise in, layers + indoor training environment. Plus also ideally tympanic (ear) thermometer; weighing scales (food scales for drink bottles and also scales to weigh yourself pre/post session).
Cost: £95
Marathon Des Sables 2026 ECG medical certificate
We are offering the opportunity to have your ECG and medical certificate completed with us, alongside heat acclimation sessions. The ECG, blood pressure and resting heart rate measurements will be taken by technicians within the School of Sport, Exercise and Health Sciences, and the interpretation and medical certificate sign-off will be performed by Dr Kamal Chitkara MBBC, MRCP, MD Consultant Cardiologist & research lead at Royal Derby Hospital. The cost is £165. If you would like to book an appointment, please fill out our contact form, found below.
What's involved with heat training?
If you are doing an event in the heat, it is wise to do all you can to prepare. We have a chamber in which the temperature and humidity can be increased to help you adapt. Regular exercise in hot, humid conditions causes several physiological adaptations that can reduce the adverse effects of heat on exercise performance.
Overview
Whilst a one-off session in the heat chamber would give you an idea of how you respond, a series of sessions would be much more useful as it will allow you to acclimate to the heat, as well as trialling kit, and potentially also different nutrition/hydration strategies.
We aim for at least an hour of exercise in the chamber, aiming to get your temperature up to around 38.5C for the greatest duration possible. During the session, we will take regular physiological measurements. We will also get measures of your body mass pre and post-session and how much you drank to calculate your sweat rate. We can also measure sweat sodium concentration.
This helps us track your adaptation and can also be useful in guiding your hydration strategy, particularly if you are a very salty sweater.
Exercise can take place on a treadmill or bike.
Timing
The number of heat acclimation sessions you may need to book with us to prepare for your event depends on many factors, such as whether you’ve been acclimated before, whether you’re male or female, and what heat acclimation resources you have access to outside the lab.
Ideally, you should do your heat acclimation as close to your departure as possible so you will be ready for your event. However, we understand that your availability and daily schedule plays a part in when you can come in for your sessions, and it is also possible to complete an acclimation block a few weeks or even months before an event, and then 'top up' with a small number of sessions prior to departure.
Our ideal scenario for you to achieve maximal adaptations is to complete 6 sessions in the chamber and to supplement this with passive heat exposures. Our general advice is the more sessions you can complete the better. This may not be possible/necessary for everyone, so we are happy to discuss your individual situation and needs, and come up with an appropriate plan.
Who is it for?
Anyone who is preparing for an event in the heat can access our service. There is also evidence emerging that the physiological adaptations to exercising in the heat can provide benefits when exercising at altitude, as well as when exercising in temperate conditions. Exercise mode and intensity is adapted to suit the individual’s requirements.
What do you get?
After each session you will receive a report with your data. This explains how you responded during the session, tracks adaptations over time and advises on how much you need to drink to rehydrate post-session.
After your final session, you will receive a more comprehensive report which will include an analysis of how you have adapted to the heat, information on your sweat rate and how much you need to drink to maintain hydration, as well as your sweat sodium concentration and how this influences your hydration strategy.
Throughout the course of sessions we will also be able to help you determine an optimal, appropriate pacing strategy for your event. You will gain an understanding of how you feel in the heat and how this relates to your physiology, so that you can keep your hydration on track and adapt exercise intensity as necessary to help you avoid overheating.
Cost of sessions
Cost for an individual are:
1 – 3 sessions £103/session
4 – 7 sessions £87.50/session
8+ sessions £82.50/session.
Discounts are available for bookings for more than one person.
We also have different (lower) rates for major event bookings where we have multiple people preparing at the same time, such as the Marathon de Sables. Please contact us with your specific requirements for a bespoke quote.