Why should you drink less water at night or before sleeping?

There are several benefits of drinking and an average adult should drink 2 to 3 liters of water daily. Drinking inadequate water shall make one fall sick as there are several purposes that are being served by drinking the right quantity of water: it regulates the body temperature, helps in the metabolic process, flushes out toxins, and performs several other important functions.

Water benefits the most as far as your stomach is empty. If you are drinking water in large quantity before going to sleep or after having dinner, then you would face consequences. Drinking water in an unmeasured quantity during night can have harmful effects on the body.



There is a way of drinking water; it should be drunk in the right quantity and at the right time. One should drink very less water at night or before going to sleep. The reasons have been enumerated below:

  1. The most obvious and foremost reason for not drinking a lot of water before sleeping is that, it will make you visit the washroom in the middle of the night, thereby, causing disturbance in sleep. Water should, therefore, be drank sometime (an hour) before sleeping.
  2. Drinking a lot of water before sleeping can cause problems in the kidneys as well. Since, the body is not active, the water does not get utilized fully and the drainage system of the kidneys does not function properly. It is, therefore, best not to drink too much water during sleeping.
  3. The urinary bladder is elastic in nature and contracts and expands accordingly, upon drinking water. During the night it should be left to remain in its original state as drinking too much of water would imply that the bladder would remain expanded throughout the night and the water would not be able to pass out from the body. Repeating these days after days would cause harm to the bladder.
  4. Drinking too much of water before going to sleep might cause water retention in the body. This shall affect not only the renal system but also the circulatory system of the body. Retention can also cause serious problems like urinary tract infection.
  5. Drinking too much water before sleep can also lead to the dropping of the salt level in the body. This is a serious condition which can cause swelling of the brain and affect the nervous system.
  6. The fall in the sodium level of the body can cause cell swelling (which also includes Brain cells). This can cause loss of consciousness, seizures and other related neurological problems. However, this happens due to over hydration and only if a man drinks more than required quantity of water.
  7. If one drinks too much of water before going to bed, then it does not get utilized by the body. As the body remains inactive and passive, no calorie is lost and no sweat is shed. Hence, the retained water disturbs the electrolyte balance of the body, causing complications in the renal system.

It can, therefore, be seen that though water is considered to be the elixir of life, it should be drank in a proper fashion. Too much of water or too less of water might cause health complications affecting the organs adversely. Also, the time factor has to be kept in mind. It is best to drink water proportionately throughout the day, rather than drinking a lot at one time before going to bed. To avoid dehydration and over hydration, the above points should be kept in mind.

43 Responses to Why should you drink less water at night or before sleeping?

  1. supriya ghule says:

    So useful information.

  2. dhongskhie tilbe says:

    Drinking too much water at night is bad because you’re sleeping and your body is inactive…

    what if i drink a lot of water at night…and i’m still awake…(let just say that i always sleep late because im studying, surfing on internet, watching tv..etc)

    its ok for me to pee very hour at night…because im still awake…

    Is this habit can still be bad for me??

    • Med student says:

      No it won’t be bad for you. I think what the article is trying to say is rather than drinking water at night is bad for you, it’s drinking water right before sleeping periods is bad for you.

      • Adriana says:

        I drink a lot of water all day and night. I drink right before I go to bed and every time I wake up in the middle of the night. I cannot fall sleep thirsty. Is that really bad? Now I’m worried…

  3. shaik Ameer says:

    It’s very good information for everyone. Thanks a lot.

  4. Mr Dziworshie says:

    please i want to know, i am same who like water in a lot,it’s good for me

  5. Mr Dziworshie says:

    please i want to know, i am same who like water in a lot,it’s good for me

  6. Austin says:

    how is the best way to drink much water without losing weight?

  7. Kirti says:

    So usefull information. I am drinking water before sleeping daily uptil now and today my friend told me not to do so that is why i began searching and came across this and it helped me. Does drinking lots of water before sleeping results in gaining weight?

  8. Samuel Plange - Rhule says:

    If I go to bed at 10pm what time is it appropriate to drink water before going to bed
    Should it be an hour to bed or thirty minutes or just going to bed

  9. noel mchaky says:

    Drinking little water just 1 or 2 hours before going to sleep is good. But drinking a lot of water before sleeping its bad for our health.. That is what the article says… So for the improvement of our health we have to drink water regularly 2 to 3 litres per day not for once… ┬«MED student at UNIVERSITY OF DODOMA

  10. Sneha says:

    Thanks for the very useful information

  11. jawad abbasi says:

    I drink water in mid night in between the sleep. Its my daily routine to getup from sleep & drink water. If i try not to drink then I cant sleep. Is it good?

  12. mithun says:

    Will it affect to heart if we drink water before going to bed

  13. Kipkirui Segut says:

    Is taking too much water also has effects on stomach mucal walls?

  14. pauline says:

    pls i wake up at night to drink water, is that good or bad for me? And some one told me drinking water at night makes one to add weight, is that tru?

    • admin says:

      No, it has no link with weight gain.

      In fact, that is healthy to drink water after 1 hour of your meal, it helps in better digestion.

  15. gwendolyn pinnock says:

    I have a condition which is called narcolepsy. i usually fall asleep anytime, so it causes me to be awake several times in the night, and during that time i will drink quite a bit of water at least half a litre of water. Is that safe for me.

    • admin says:

      No, it won’t affect you in any way.

      Drinking a lot of water with your meal is not good, but other times it is beneficial for many reasons.

  16. swaroop says:

    Hi sir I want to know y drinking lots of water during night time leads to release of sperms and my dreams was also sexual …..please tell me is it any diseases

  17. Sidhant Tekchandani says:

    I Drink water before i go to sleep in littel amount .. in morning i feel going to washroom but still i keep on sleeping is it bad for health .. plz suggest me its a humble request

  18. Linda Hazlett says:

    I drink a lot of water all day and before bed. Lately I have been getting UTI a lot . Now after antibiotic treatment I wake up as usual during the middle of the nite but can not hold my urine until I get to the bathroom! I am a 71 yr. old female. I have not had a bladder infection in 20 years. I saw a urologist who told me my urine sample showed ecoli. Am waiting on 3 rd 3 day culture. Do not want to take any more antibiotics. After reading your information it seems as simple as not drinking so much water before I go to bed. Hope so. You have given me hope.i do suffer from dry mouth because of several meds. Thank you.

  19. lindah says:

    I drink abt 3ltr at nyt,l also sleep around 3-4am. and about 2ltr during the day. Is it safe?

  20. avinash k says:

    i drink complete 1 ltr. bottle before going to sleep, is it normal.

    • admin says:

      No, its not. You shouldn’t drink that much water before going to sleep. Try reducing it, and keep it to 1 glass only.

  21. Revathy says:

    Its really helpful

  22. pavan says:

    Whenever I drink water my weight increases and that makes me not to drink water as I want my weight always be in control please give me good suggestion to overcome this

  23. Carm says:

    Am diabetic an if I fall asleep say around nine and I wake up around twelve I gets very thirsty and I drink water in small amounts but finds it hard to go back to sleep. While am awake I take door of water is it bad for me?

    • kay says:

      hello my husband drinks up to 4 pints in the night and his sleeping pattern is really bad . he can wake up at 12 and cant go back till about 5
      should you advice him to go to doctors.

  24. Janey says:

    Man I must be a mess !! I take my glass of tea sweetened with splenda to bed every night with me, and wake with dry mouth often and I take sips all through the night. I do suffer with dry mouth and dry eye condition… Any suggestions for me ??

  25. NA says:

    I forget to drink water day time . I drink like 600 ml day time and when i face some problem during pee i remember that i should drink. So in bed before sleeping i concentrate on drinking 330 ml or max 660 ml.
    Is that so bad?

  26. Chuks says:

    I can sleep without drinking water but each time I woke up I much drink up to 1 litre of water if not I will never sleep again. Please what’s my advice?

  27. teslyn says:

    I don’t drink enough water during the day.so i just start to drink 2 glass of water in the night about 2 hours before going to bed.

    is that enough?

  28. teslyn says:

    I don’t drink enough water during the day.so i just start to drink 2 glass of water in the night about 2 hours before going to bed.

    is that enough?

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