Weight difference between morning and evening.

[War Lord]

I always weigh myself in the morning when I first wake up.

A few times, I have weighed myself the night before, and then when I first wake up. The difference varies, but the morning weight is always 2-5 lbs less.

My question is, what causes this large difference in weight? What happens to your body at night that lowers your weight?

[slufa111]

well first of all, first thing in the morning you have an empty stomach. Second, you have been laying down for 6-8hours.

Most of the time at night, you weigh yourself after eating dinner or pre-bed meal and your body is more than likely holding a bunch of water.

[commi]

At night its water weight. You are weighing yourself with all the liquid and food you ate during the day. Weigh yourself first thing in the morning after you take your piss that is what you actoually weigh any other time youll just be looking at water weight.

[War Lord]

well first of all, first thing in the morning you have an empty stomach. Second, you have been laying down for 6-8hours.

My stomach may be empty, but my intestines aren't.
The water weight was my guess I suppose, I just was always curious.

Appreciate the responses guys, repped.

[deedubb]

I get what he's asking. So during the night, where does the water or liquid food in your system go? i certainly don't **** or piss the bed. I also doubt that 2-5 lbs of water evaporate from my body while im laying there at night.....but who knows, anything is possible i guess. I just dont understand it.

[qw3r]

I get what he's asking. So during the night, where does the water or liquid food in your system go? i certainly don't **** or piss the bed. I also doubt that 2-5 lbs of water evaporate from my body while im laying there at night.....but who knows, anything is possible i guess. I just dont understand it.

im thinking evaporation because it takes a fair bit of energy just to keep the body warming itself.

[Wowzer]

I always weigh myself in the morning when I first wake up.

A few times, I have weighed myself the night before, and then when I first wake up. The difference varies, but the morning weight is always 2-5 lbs less.

My question is, what causes this large difference in weight? What happens to your body at night that lowers your weight?

Water loss will make you lighter. You lose water overnight through your breath, some through evaporation from the skin (you lose some all the time through skin, although it may not be noticeable). How much depends on the environmental temperature and humidity. This is most likely the majority of overnight weight loss.

The other thing will be loss through energy stores being used. At your age, height and weight your BMR is roughly 2100 calories a day. If you sleep for 8 hours you will burn roughly 700 calories just sleeping. Depending on the proportion of fuels your body uses during those 8 hours, you may lose 100-200 grams of weight. Burnt fuel becomes carbon dioxide and leaves your body through the breath.

[keepshruggin]

I always weigh myself post-dump. Err, just thought I'd share

[mr_azz_84]

weight yourself once a week,
same day of the week in the morning after you do a piss and a sh*t.

[Bad Company]

Some nights, especially this time of year when i drink lots, I weigh up to 3 kilos (6.6 lbs) more than in the morning.