My spouse gets up before me and often wakes me up with noise or by turning on a light.
A spouse, family member, or roommate’s alarm clock, the sounds of dishes clanking, water running, mobile phones chiming, or music playing are common morning disturbances for a lot of people. Light which hits the face can stimulate a wake-up reflex. If these things are interfering with your ability to get that final dose of REM sleep needed to restore you, you may want to try earplugs and/or eye shades. There are new products on the market which are extremely comfortable, easy to use, and inexpensive. It may take a few nights to get used to, but sometimes simple sensory deprivation (dark and quiet) is all a person needs to maintain deep sleep.