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How long can you live without air?

Time is very important when an unconscious person is not breathing. Permanent brain damage begins after only 4 minutes without oxygen, and death can occur as soon as 4 to 6 minutes later.

What is the healthiest human diet?
What is the healthiest human diet?

A healthy diet includes the following: Fruit, vegetables, legumes (e.g. lentils and beans), nuts and whole grains (e.g. unprocessed maize, millet,...

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Jeans can typically be worn 3 times before washing. Leggings and tights should be washed after every wear to get rid of the baggy knees. Suits...

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1. Check for responsiveness. Shake or tap the person gently. See if the person moves or makes a noise. Shout, "Are you OK?" 2. Call 911 or the local emergency number if there is no response. Shout for help and send someone to call 911 or the local emergency number. If you are alone, call 911 or the local emergency number and retrieve an AED (if available), even if you have to leave the person. 3. Carefully place the person on their back. If there is a chance the person has a spinal injury, two people should move the person to prevent the head and neck from twisting.

4. Perform chest compressions:

Place the heel of one hand on the breastbone -- right between the nipples. Place the heel of your other hand on top of the first hand.

Position your body directly over your hands.

Give 30 chest compressions. These compressions should be fast and hard. Press down about 2 inches (5 centimeters) into the chest. Each time, let the chest rise completely. Count the 30 compressions quickly: "1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30, off". 5. Open the airway. Lift up the chin with 2 fingers. At the same time, tilt the head by pushing down on the forehead with the other hand. 6. Look, listen, and feel for breathing. Place your ear close to the person's mouth and nose. Watch for chest movement. Feel for breath on your cheek.

7. If the person is not breathing or has trouble breathing:

Cover their mouth tightly with your mouth.

Keep the chin lifted and head tilted.

Give 2 rescue breaths. Each breath should take about a second and make the chest rise. 8. Repeat chest compressions and rescue breathing until the person recovers or help arrives. If an AED for adults is available, use it as soon as possible. If the person starts breathing again, place them in the recovery position. Keep checking for breathing until help arrives.

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What is the organ that does nothing?

The appendix may be the most commonly known useless organ. Many years ago, the appendix may have helped people digest plants that were rich in cellulose, Gizmodo reported. While plant-eating vertebrates still rely on their appendix to help process plants, the organ is not part of the human digestive system.

Some human body parts have become useless over the past few million years. Useless body parts include the appendix, the tail bone, and the muscle fibers that produce goose bumps. Top editors give you the stories you want — delivered right to your inbox each weekday. Loading Something is loading. Thanks for signing up! Access your favorite topics in a personalized feed while you're on the go. download the app Email address By clicking ‘Sign up’, you agree to receive marketing emails from Insider as well as other partner offers and accept our Terms of Service and Privacy Policy Some human body parts serve no purpose despite once having a specific function among our ancestors. The appendix, for example, is not an essential body part (though some research suggests it may act as storage for good bacteria). In some cases, the appendix gets inflamed or ruptures, which requires surgical removal of the organ. Several other body parts used to be important for humans' survival, but they have since become useless. Some of them can be removed, and the absence of them does not lower people's quality of life. Business Insider spoke with Dorsa Amir, an evolutionary anthropologist at Boston College, to learn more about what she calls "evolutionary leftovers." Amir said that if a trait becomes no longer useful but remains harmless to humans, then it tags along for the evolutionary ride. Take a look at nine body parts that remained in the human body despite having no function for millions of years.

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