Quality versus quantity, light sleep versus deep sleep, and what exactly is REM? For something that we do every night, sleep is a mysterious process. But thanks to technology, we’re gaining more insights that may help those of us who struggle to get a proper night of shut-eye.
Sleep expert Dr Carmel Harrington answers your questions!
WHAT HAPPENS WHEN I SLEEP?
First, it’s helpful to get an idea of what really goes on after we doze off. “Not all sleep is the same, and the