SLEEP AND DREAMS

SLEEP AND DREAMS
Scientist know that the brain is very active when a person is sleeping. There are five stages, or parts, of sleep, Stage 1 stars after you fall asleep. If there is a noise or abright light, you wake up very easily. In stage 2, your brain waves are very slow. Stage 3 and Stage 4 are deep sleep. It's very difficult to wake up then. Your body rests and grows during these stages.Stage 5 is when you dream. Your eyes move a lot, and your brain waves are fast. This stage of sleep is very important for your memory. After Stage 5, you wake up a little, and then Stage 1 stars again.We go through the five stages of sleep four or five times every night, so we have many dreams in one night.
How much sleep do you need? The answer depends on your age. Babies should sleep fifteen tosixteen hours every day. Children and teenagers need nine or ten hours of sleep, but older people only need six to eight hours. If you sleep for only four hours one night, you may just feel tired thenext day. But many nights of bad sleep can be bad for your health. People who don't get enough sleep get sick more often. And sleep is very important for learning. It's one reason why students shouldgo to bed early.
TRADUCCION:

Científicos saben que el cerebro está muy activo cuando una persona está durmiendo. Hay cinco etapas o partes de sueño, Etapa 1 estrellas después de que te duermas.Si hay un ruido o una luz brillante, se despierta muy fácilmente. En la fase 2, las ondas cerebrales son muy lentas. Etapa 3 y Etapa 4 son sueño profundo. Es muy difícil despertar a continuación. Sucuerpo descansa y crece durante estas etapas. Etapa 5 es cuando sueñas. Sus ojos se mueven mucho, y las ondas cerebrales son rápidas. Esta etapa del sueño es muy importante para la memoria. Después dela etapa 5, se despierta un poco, y luego la etapa 1 estrellas otra vez. Vamos a través de las cinco etapas del sueño cuatro o cinco veces cada noche, así que tenemos muchos sueños en una noche....