Many people who love to spend their vacation near the sea or at the pool debate about where it is better to learn to swim, which beaches are dangerous, which type of swimming is better for your health, and where the water is the clearest. In this article, we have compiled the answers to the most frequent questions and busted some myths that could prevent you from having fun while swimming.
On the eve of the velvet season, Bright Side offers you some information that could turn out to be useful, even now.
1. What danger does cold water hide in hot weather?
Some people are sure that jumping into cold water during hot weather contributes to an increase in your resistance to sickness. But the fact that cold water stimulates the production of immune cells (T-lymphocytes) refers only to those who are athletic or really active. For others, a drastic change of temperature is a serious stress for the body and puts a lot of pressure on the heart and vessels.
In order to not provoke increased palpitations, respiratory disorders, the exacerbation of chronic diseases, and convulsions, try to avoid jumping into cold water or cliff jumping. It’s 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 this, jumping into the water won’t be dangerous anymore.
2. Which sea creatures are dangerous and which are not?
Many people get freaked out seeing the harmless leafy sea dragon or sea urchins whose needles can prick their feet. Those pricks are painful but luckily, not deadly. At the same time, there are sea creatures that look attractive but are very dangerous.
For example, the poison in the tentacles of the box jellyfish can kill 60 people in 3 minutes, while the cone-shaped shells that people usually take home as souvenirs from the ocean are the former ’homes’ of mollusks with poisonous spikes. The danger appears when people try to hold a live shell in their hands — its poison, called conotoxin, can cause blackouts and in severe cases paralysis and heart failure.