Light sleep is the beginning of your sleep cycle and your body's way of winding down. Breathing, heart rate and muscle changes prepare your body for the deeper sleep to come. Light sleep is broken ...

Code for June 4, 1989, the date of the crackdown on pro-democracy protests around Tiananmen Square. (The military operation began late on the night of June 3.) Ordinarily the event is referred to as ...

Sara is an experienced writer, editor, and project manager who specializes in personal finance, news, and lifestyle content. A journalist with more than two decades of experience, Sara has served as ...

Sleep has two phases: non-rapid eye movement (NREM) and rapid eye movement (REM). It also has four stages that repeat in 4 to 6 cycles nightly. Each stage affects your body differently, from light ...