Without it, we are toast. The daytime sky would get darker. With fewer particles in the atmosphere to scatter blue light, the sky would get a bit less blue and a bit more black. Every internal combustion engine would stall.

International researchers have discovered the first animal that doesn’t need oxygen to live. The organism, a parasite called Henneguya salminicola that is distantly related to coral and jellyfish, lives in salmon tissue and has evolved to survive without needing oxygen for energy.

A tiny parasite called Henneguya salminicola is the first known multicellular animal that can survive without oxygen, according to a study published Tuesday in the journal Proceedings of the National Academy of Sciences by researchers at Tel Aviv University.

Between 30-180 seconds of oxygen deprivation, you may lose consciousness. At the one-minute mark, brain cells begin dying. At three minutes, neurons suffer more extensive damage, and lasting brain damage becomes more likely. At five minutes, death becomes imminent.

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.

They include drowning, suffocating, cardiac arrest, and stroke. Mild symptoms include memory loss and problems with motor function, such as movement. Severe cases can result in seizures and brain death. Read on to learn more about brain hypoxia, also known as cerebral hypoxia.

Blood circulation can be stopped in the entire body below the heart for at least 30 minutes, with injury to the spinal cord being a limiting factor. Detached limbs may be successfully reattached after 6 hours of no blood circulation at warm temperatures. Bone, tendon, and skin can survive as long as 8 to 12 hours.

In particular, the temporal lobe (at the temples) is sensitive to oxygen deficiency which is also where the memory is situated. A lack of oxygen from three to nine minutes can result in irreversible brain damage! In case of a cardiac arrest a CPR (Cardiopulmonary resuscitation) is best started within two minutes.

Your brain does eventually heal itself. This neuroplasticity or “brain plasticity” is the more recent discovery that gray matter can actually shrink or thicken; neural connections can be forged and refined or weakened and severed. Changes in the physical brain manifest as changes in our abilities.

HOW TO HELP YOUR BRAIN HEAL AFTER AN INJURY

• Get plenty of sleep at night, and rest during the day.
• Increase your activity slowly.
• Write down the things that may be harder than usual for you to remember.
• Avoid alcohol, drugs, and caffeine.
• Eat brain-healthy foods.
• Stay hydrated by drinking plenty of water.

How to Rewire Your Brain For Massive Success, According to Neuroscience

1. Engage in brain aerobics.
2. Find fresh ideas.
3. Envision the person you want to become.
4. Focus on your long-term goals.
5. Shift to an exponential mindset.

Physical symptoms of brain damage include:

• Persistent headaches.
• Extreme mental fatigue.
• Extreme physical fatigue.
• Paralysis.
• Weakness.
• Tremors.
• Seizures.
• Sensitivity to light.

A medical exam is the first step to diagnose a potential brain injury. Assessment usually includes a neurological exam. This exam evaluates thinking, motor function (movement), sensory function, coordination, eye movement, and reflexes. Imaging tests, including CT scans and MRI scans, cannot detect all TBIs.