If it yawns more often than you, it is not just an impression. And if she insists on staying in bed a little longer, it’s not laziness. According to several scientific studies, women really need almost half an hour of additional sleep every night to feel rested as much as men. This observation, validated by several scientific works relayed in particular by Discover Magazinereveals a disparity that many live on a daily basis without knowing its origin. Between hormonal cycles, iron deficiencies and mental load, the gap of fatigue between men and women is explained by multiple factors, often ignored or minimized.
The biological differences that disrupt female sleep
If sleep needs naturally vary depending on age, rhythm of life or the level of activity, the female body obeys specific constraints. First, hormones play a decisive role: estrogens influence the sleep phases, and their fluctuations over the menstrual cycle, pregnancy or menopause disturb the quality of rest.
Another often underestimated factor: iron deficiencies, much more frequent in women, can cause chronic fatigue but also specific disorders such as restless leg syndrome, which embarrassments to fall asleep. These physiological variations, recurrent and natural, impose a larger sleep debt to fill.
The study relayed by Discover Magazine evokes an average need for 28 minutes of additional sleep per night in women to reach a state of rest equivalent to that of men.
The weight of the mental load and domestic inequalities
But beyond biology, it is also social reality that weighs heavily on the eyelids. The mental load, this invisible burden which consists in anticipating, organizing and managing the needs of the household, remains massively supported by women. A continuous form of mental tension, not very conducive to serene sleep.
Parenting further accentuates this gap. According to the study, it takes an average of a mother on average to find a stable sleep after a birth … against an often shorter duration for fathers. Nocturnal awakenings, anxiety linked to children, unrelated tasks: all this permanently affects the quality of female sleep.
In addition, women would work as much, if not more, as men, while assuming a disproportionate part of domestic responsibilities. This cumulation increases mental fatigue, strengthens insomnia and lengthens the period necessary for real recovery.
When lack of sleep becomes a public health problem
In France, 44 % of women say they are dissatisfied with the quality of their sleep, compared to 37 % of the general population. This figure highlights an often underestimated reality, and yet fraught with consequences.
Because the sleep deficit is not content to alter concentration or mood. In the long term, it is associated with an increase in the risk of cognitive decline, high blood pressure, even chronic diseases. In other words, not sleeping enough is not a simple discomfort: it is a health risk.
And yet, despite the available data, female fatigue remains regularly relativized or trivialized. Recognizing that women objectively need more sleep is also admitting that you have to adapt rhythms, expectations … and perhaps also looks.