You may even hear people say they're “sweating buckets." What are they talking about? No, they don't have buckets coming out of their skin, but they are probably sweating a lot.
Why do some people use the phrase “sweating buckets" to mean that they're sweating a lot? Well… buckets come in all sorts of sizes, but one common measurement is that a bucket is equal to five gallons.
Can you imagine sweating enough to fill a five-gallon bucket? Probably not! That would be a lot of sweat. But you can see how the image of a bucket of sweat can communicate the idea that you're sweating a lot.
Sweating — also known as "perspiration" — is your body's way of cooling itself to regulate temperature. Everything your body does generates heat. Whether it's exercising, eating, or even sleeping, your body constantly produces heat.
Sweat is mostly water with small amounts of salts and amino acids. As sweat comes out of the tiny pores in your skin, it evaporates and cools the skin beneath it. Scientists estimate that one drop of sweat can cool one liter of blood by 1° F.
Believe it or not, you sweat all the time — even when you're asleep! How much you sweat, though, depends mainly on your body temperature.
As you sweat, your body is losing water. That's why it's important to drink plenty of water.