Based on advanced medical technology and the testimony of those who have had a near brush with death, scientists can offer insights into what it's like to die. The vast majority of deaths are the result of the brain being deprived of oxygen.
Drowning victims normally struggle for several minutes and experience a burning or tearing sensation as water enters the lungs. This is followed by a feeling of tranquility. People who bleed to death experience weakness, thirst and confusion.
Electrocution and hanging, if done correctly, usually cause a very quick death. Victims of decapitation may remain conscious for up to 7 seconds with some historical reports extending that to 30 seconds.