Many people who like to spend their holidays by the sea or at the pool debate about where it is better to learn to swim, which beaches are dangerous, what type of swimming is better for your health, and where the water is the clearest. In this article, we’ve compiled the answers to the most frequently asked questions and broken some myths that might keep you from having fun while swimming.
On the eve of the velvet season, Bright Side offers you some information that could prove useful even now.
1. What is the danger of cold water in hot weather?
Some people are sure that jumping into cold water in hot weather helps increase your disease resistance. But the fact that cold water stimulates the production of immune cells (T cells) only refers to those that are athletic or really active. For others, a radical change in temperature is a serious stress on the body and puts a lot of pressure on the heart and vessels.
In order not to cause an increase in palpitations, respiratory disorders, exacerbation of chronic diseases, and seizures, try to avoid jumping into cold water or cliff jump. It is also extremely dangerous if you do it during the hottest part of the day, especially after being in the sun for a long time. Instead, enter the water slowly, splashing your body with water, letting your body gradually get used to the temperature. After that, jumping into the water won’t be dangerous.
2. Which marine creatures are dangerous and which are not?
Many people panic when they see the harmless leafy sea dragon or sea urchins whose needles can sting their feet. These stings are painful but fortunately, not lethal. At the same time, there are marine creatures that seem attractive but are very dangerous.
For example, the poison in the tentacles of the jellyfish can kill 60 people in 3 minutes, while the cone-shaped shells that people usually take as memories of the ocean are the ancient shellfish “houses” with toxic tips. The danger arises when people try to hold a living shell in their hands — its poison, called conotoxin, can cause power outages and, in severe cases, paralysis and heart failure.