Children are most at risk during the summer. Therefore, be sure to explain to them how to behave at a body of water to avoid trouble. Do not lose sight of them – always be vigilant, as help may be needed at any moment. Remember that you are a role model for a child, so strictly observe the rules of behaviour on the water yourself!
One of the problems with swimming is losing a sense of moderation, although prolonged immersion in water leads to hypothermia. Chills and shivering should be a reason to immediately get out of the water, go ashore, and warm up, for example, by doing a short, brisk run. The duration of swimming depends on the temperature of the water and air, and the force of the wind. Optimal conditions are clear, windless weather from +25°C with water not below +18°C.
Enter the water gradually to avoid a sharp temperature drop and vascular spasm. Do not rush to dive in immediately after overheating: go into the shade, cool down, and only then go for a swim. It is not advisable to swim on an empty or full stomach – it is better to wait an hour and a half after a meal. Never swim during a thunderstorm!
When swimming long distances, conserve your energy, stopping occasionally to rest on the water: lie on your back or hold your knees and elbows to your chest and abdomen (like a float). Do not swim far from the shore on inflatable mattresses or rings, especially if your swimming skills are poor. In this case, stay close to the shore so you can touch the bottom with your feet at any moment.
 
Basic rules for safe behaviour on the water.