Lack of water is the #1 trigger of daytime fatigue.
Sounds above 130 db
Pain occurs when sounds are above 130 db.
More Health Facts
Lack of water
Brain energy consumption
The human brain uses approximately as much energy as a 10 watt light bulb.
Brain survival time without oxygen
The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.