Why can't we revive after death?

People as well as other creatures must follow the rules of nature, born and die. With today's modern advanced technologies, we can only delay death and not reverse it.

• Close-up of the transformation of the human body after death
• What happens inside the human body when it is about to drown?

Many people now choose to freeze after death to wait for future technology to help them revive. This is a controversial technique and no one can confirm whether it will help a person to revive after death.