Scientists do not know exactly why people need sleep, but studies show that sleep is necessary for survival. Sleep appears to be necessary for the nervous system to work properly. While too little sleep one night may leave us feeling drowsy and unable to concentrate the next day, a long period of too little sleep leads to poor memory and physical performance. Hallucinations (seeing things that aren’t really there), vision problems, and mood swings may develop if sleep deprivation continues.
- What causes a yawn?
- Can my cat or dog benefit my health?
- Why is exercise important to health?
- Who is God?
- Are angels real?
- What is hell?
- Can chicken soup help a cold go away?
- What is heaven?
- Where do people go after they die?
- Why do people cry when someone dies?
- What do we do after a person dies?
- Does it hurt to die?
- Can people who die see and talk with living people after they are gone?
- What happens when people die?
- Why do people have to die?
- Why do people have to grow old?
- Who decides which of the divorced parents their children will live with?
- Why is laughter called “medicine” for the human body?
- What happens as we age?
- Why do husbands and wives divorce?
