Outdoor Classroom: Some basic safety tips for swimming in the wild

There is a high risk of outdoor sports. Therefore, strengthening safety awareness, how to avoid the occurrence of various types of accidents, and how to save yourself and save people after an accident is what we should focus on and emphasize. In outdoor activities, whether it is mountaineering, snaking, rafting, downhill or orientation, rivers, seas and seas are often encountered. Therefore, drowning is an accident that occurs frequently in outdoor sports.

The principle of safe swimming

First, understand your health status:

1. Heart disease, high blood pressure, infectious diseases, epilepsy, skin diseases, eye diseases, etc. should not be used for swimming;

2. Weary, sick, full of food, fasting, bad mood and not suitable for swimming after drinking.

3. The correct assessment of self-ability, when swimming can not be stubborn, it should be done. Poor swimmers cannot go deep into the water or go too far offshore.

Second, choose a safe place:

1. Do not swim in areas with warning signs such as "no swimming" and "danger of water depth";

2. Do not swim in waterways, port areas, rapids, reef areas, quaysides, and aquatic growth areas;

3. When you encounter a thunderstorm or earthquake while swimming, you should go ashore immediately;

4. Understand water temperature, waves, wind power, tides, etc.

5. Unknown terrain or shallow areas should not be diving, can not rush into deep water;

Third, develop good habits:

1. Warm-up exercises: stretching exercises should be done before entering the water;

2. When breathing during swimming, try to use the mouth to inhale, use the nose to exhale, and inhale and exhale with the maximum vital capacity, so as to have a rhythm, it is not easy to talk more, to prevent drowning;

3. Get into the habit of swimming in the blink of an eye, wear goggles to avoid being hit or kicked;

4. Swim together to take care of each other;

5. To engage in water activities, except for swimming, they should wear life jackets;

6. Don't jokingly call for help;

7. After leaving the water, immediately wipe dry and maintain body temperature;

8. Before swimming, you should carefully survey the waters and use buoys to divide the deep and shallow waters and the safe areas.

Ii Reasons for drowning in the wild:

People are submerged in water. Because the respiratory tract is blocked by impurities such as water, sludge, and weeds, the larynx and trachea are paralyzed, causing suffocation and hypoxia. This is called drowning.

First, personal factors:

1. The confusion caused by drowning caused the drowning of the swimming stroke;

2. Into deep water areas;

3. Excessive physical activity caused by lack of physical activity or dyspnea caused by swimming exercise, such as cramps.

After a long swim, you may change to backstroke. You can easily float your nose and nose over the water, adjust your breathing, relax your body, rest for a short rest, and then swim to the shore or float on the water. Rescue. On the contrary, flustered mood can lead to exhaustion of body tension and premature drowning.

Second, environmental factors:

1. Rocks are slippery, rolling, and spaced;

2. The water temperature difference is large and the water temperature is too low;

3. Undercurrent of whirlpool: swimming in rivers sometimes encounters huge vortices. At this time, the vortex center should be freed along its tangential direction at the fastest speed, and it must not be used to stand upright and step on the water and swim upstream to prevent it from being powerful. Vortex inhalation underwater. In case of getting involved in the water, you should also take a deep breath before entering the water and strive to fight underwater with snorkeling. At this time, tenacious survival consciousness is your only hope of being rescued;

4. Riverbed differences;

5. Heavy rain caused flash floods.