It’s probably occured to you more than once: you go to bed tired, hoping to sleep through the night, but around 2 a.m. you open your eyes and can’t help it. The first reaction is usually to criticize the glass of water you drank before bed, but the truth is much more complicated.
The real reason you wake up at 2 a.m.
According to sleep specialists, the bladder isn’t always the main reason. What’s really occuring is an imbalance in the way your body handles fluids and controls temperature during the night.
During the day, gravity causes fluid to accumulate in the legs and ankles. When you lie down, this excess fluid is redistributed into the bl00dstream, forcing the kidneys to work harder and creating the need to urinate.
Additionally, changes in body temperature can disturb deep sleep, making you more sensitive to any internal signals, even when your bladder isn’t completely full.
Finally, stress and hormonal imbalances during the early morning trigger the nervous system, waking you up for no apparent reason.
The role of sleeping position
Your sleeping position can be essential. Sleeping on your back helps reallocate fluids toward the center of your body, which enhances kidney function. On the other hand, sleeping on your side, especially on your left side, eases pressure on your bladder and enhances circulation.
The effect of temperature and microclimate in your room
A bedroom that is too warm or too cold can disturb the deep stages of sleep.
- In the heat: your body fails to lower its core temperature and keeps in light sleep.
- In cold weather: the so-called “cold diuresis” is activated, which causes the kidneys to produce more urine.
Stress and night wakings
see continuation on next page
