system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Do we actually sweat out toxins? What are these so-called "toxins" and does our body do it with alcohol as well?
gpt
No, sweat is just water that's a little salty.  Almost all of the toxins your body takes in are expelled in urine. 

Anything that could do damage to a cell is called a toxin.  There is an endless number of them, but some well-known ones are alcohol, cyanide, arsenic, mercury, caffeine, nicotine, chlorine, and many animal venoms.  Notice how most of the things on that list can kill you? That's why it's important to get them out.  

Your kidneys filter them out of the blood, and they are sent to the bladder, where they are mixed with water and urea (a natural byproduct very similar to ammonia, this is why urine is sterile) which dilutes and denatures the toxin, and then expelled using the orifice preferred by your sex.