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Articles About Dreams, Fast facts on dreams. We may not remember dreaming, but everyone is thought to dream between 3 and 6 times per night. It is thought that each dream lasts between 5 to 20 minutes. Around 95 percent of dreams are forgotten by the time a person gets out of bed. Dreaming can help you learn and develop long-term memories. An article is a word that is used with a noun to specify grammatical definiteness of the noun, and in some languages extending to volume or numerical scope. The articles in English grammar are the and a/an, and in certain contexts some.

There are five phases of sleep in a sleep cycle:

Stage 1: Light sleep, slow eye movement, and reduced muscle activity. This stage forms 4 to 5 percent of total sleep.

Stage 2: Eye movement stops and brain waves become slower, with occasional bursts of rapid waves called sleep spindles. This stage forms 45 to 55 percent of total sleep Articles About Dreams.

Stage 3: Extremely slow brain waves called delta waves begin to appear, interspersed with smaller, faster waves. This accounts for 4 to 6 percent of total sleep.

Stage 4: The brain produces delta waves almost exclusively. It is difficult to wake someone during stages 3 and 4, which together are called “deep sleep.” There is no eye movement or muscle activity. People awakened while in deep sleep do not adjust immediately and often feel disoriented for several minutes after waking up. This forms 12 to 15 percent of total sleep.

Stage 5: This stage is known as rapid eye movement (REM). Breathing becomes more rapid, irregular, and shallow, eyes jerk rapidly in various directions, and limb muscles become temporarily paralyzed. Heart rate increases, blood pressure rises, and males develop penile erections. When people awaken during REM sleep, they often describe bizarre and illogical tales. These are dreams. This stage accounts for 20 to 25 percent of total sleep time.