9 articles
Heart palpitations at night feel intense, but the night itself rarely causes them. These are the usual triggers and the...
Waking briefly between sleep cycles is part of a normal night. Learn what keeps you awake afterwards, why the time on th...
Six hours sits just under the recommended 7 to 9 hours a night. Learn why you adapt to feeling tired but not to being im...
Sleeping better does not start with 30 loose tips, but with the question of which approach has the strongest evidence. H...
Deep sleep takes up roughly 13 to 23 percent of a night, and that share falls as you age. Learn what N3 does, why your w...
Night sweats usually have an everyday cause, from bedroom temperature to alcohol or shifting hormones. Read which blood...
Sleep deprivation shifts things you can measure: cortisol, insulin sensitivity, testosterone, hs-CRP, leptin and ghrelin...
For every kilo you lose, your energy expenditure drops by 20 to 30 kcal a day. Your appetite rises by about 100 kcal a d...
Poor sleep and your blood influence each other in two directions. Learn which values reveal physical causes and when it...