CLINICAL KNOWLEDGE MAGAZINE
4 min read
Exercises on Hot Days – Recommendations
Max Müller
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Diets Premium Medical Expert • 24.03.2026
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Scientifically reviewed by a clinical dietitian:
This article has been peer-reviewed for adherence to IŻŻ, WHO, and PTGiP clinical nutritional standards.
| CLINICAL KNOWLEDGE MAGAZINE CLINICAL KNOWLEDGE MAGAZINE | min read 4 min |
| Diets Premium Medical Expert Max Müller | Scientifically reviewed by a clinical dietitian 24.03.2026 |
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Key Takeaways
The vacation period is associated with the arrival of heat waves. High air temperatures often discourage outdoor physical activity, but many individuals do not wish to forgo open-air workouts. How does one prepare for physical activity during hot weather? What should one bear in mind to take care of one’s health?
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Ensuring Adequate Provision of Fluids to the Body
On hot days, especially if one is engaged in sports or outdoor activities, it is important to ensure that one is taking in enough fluids. The body responds to high temperatures by increasing sweat production to prevent overheating during intense physical activity or in hot weather. During and after exercise, we lose significant amounts of water, minerals, and electrolytes, so proper hydration is essential for maintaining water-mineral balance. It is also important to remember that dehydration can negatively impact performance during exercise, so regular fluid intake is crucial, especially on hot days. The best choice seems to be the consumption of water. To supplement minerals and electrolytes, an isotonic drink can be prepared by adding lemon juice, honey, and salt to water, providing the necessary minerals for the body.
Time for exercises
When selecting a time of day for exercising, it's crucial to consider air temperature, ensuring it's not excessively high. Therefore, it's worth considering morning or evening workouts. Avoid the highest heat between 11 am and 6 pm, as high temperatures can negatively impact achieved results. For outdoor training, choose locations with limited sun exposure to protect our bodies from overheating and sunstroke. Proper sunscreen application is essential to safeguard skin from excessive sun exposure, which may accelerate skin aging and cause severe burns. Consider training in a fitness club or professional gym, where the temperature is comfortable for our bodies.
Training attire
During a hot day, it is beneficial to wear shorts and short-sleeved shirts. It is also essential to ensure that you have suitable clothing that is breathable and aids in perspiration. It is recommended to select clothing in light colors and to remember to provide yourself with head protection. Additionally, it is advisable to have comfortable footwear and appropriate socks to prevent foot overheating and ensure comfort during exercise.
Are all individuals capable of participating in physical activity on sweltering days?
Physical exercises on sweltering days are primarily intended for individuals who are in good health and have no medical contraindications. Those diagnosed with cardiovascular diseases, such as hypertension, should definitely consult a doctor before starting training. Healthy individuals should carefully observe their bodies during physical exertion and avoid excessive training intensity, especially if the activity is performed outdoors. High temperatures do not promote breaking records, so it is advisable to sensibly choose the type, intensity, and most suitable time of day for the training.
What type of physical activity should be chosen on days with high temperatures?
During heatwaves, physical activity should be tailored to a person's preferences, abilities, and progress. It is advisable to choose an activity with low and moderate intensity. The duration of a training session should not exceed an hour. In the context of aerobic training, water sports such as swimming are a good choice. Water effectively prevents overheating and has a refreshing effect, leading to an increase in motivation for training. Obviously, performing exercises in the early morning or late evening hours should not result in any negative health consequences, but during periods of peak sun exposure, it is worth considering training in an air-conditioned room.
Summary
During the summer season, it is not wise to forgo regular physical exercise. However, to ensure your safety, you should select the proper time for training, suitable attire, type and intensity of exercises. Moreover, you should not neglect the application of sunscreen. Particularly during heatwaves, it is of paramount importance to hydrate the body appropriately and maintain the balance of fluids and electrolytes. Dehydration can lead to unfavorable health consequences and impact the deterioration of results. During summer heat, you should engage in physical activities sensibly.
Max Müller
Diets Premium Medical Expert
Member of the Diets Premium clinical editorial board. Specializes in medical diet therapy, metabolic health, and nutritional planning.
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