Each night you cycle through 4 stages of sleep. These stages can last from 90 to 120 minutes each. Each stage is progressively deeper than the last ending with the REM or rapid eye movement stage. This is the dream stage of sleep.

As the night goes on, the REM stage and the accompanying dream sequences grow longer and longer.

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January 18, 2007
Sealy Springfree lineup now available! Springfree combines the pressure relieving qualities of an all-foam mattress with unsurpassed support.