If you've worked a job for long enough you probably have some pretty interesting industry secrets. Common folks don't really think about these things because we don't have the knowledge. But people over at r/askreddit were discussing some fascinating things they learned from their jobs.

When you're taking Imodium you're actually taking an opioid. But it's designed to only interact with the opioid receptors in your digestive tract to slow down your intestines. Scientists were like hey. You know that anti-diarrhea medication heroin? Well what if we made a version of that without the pesky side effects of getting you high? u/NotMyDogPaul

People almost always try to exit through the same door they entered. In a crowded venue ALWAYS take a second to find your exit and then find a second exit. Mark them in your brain just in case. In an emergency most of the crowd is going to go for the main door they came in through. Knowing where another exit is can save your life. u/Spirtual_Worth

Trucker here and we don't want to be anywhere near you either. Go around or stay back don't just ride right beside us. We can't see you very well when you are beside us and if an accident happens you're gonna go splat. It is very very very rare that any driver wants to slow you down it's not like we get our rocks off on making you late. We work extremely long hours on very little sleep and we just wanna get where we are going without getting in an accident and killing someone. Trust me if we could go faster we sure would. Also if you give us the fist pump to honk our horn you just made our whole week. That's one of the greatest joys in a truckers life. Be safe out there!! u/MissPatricia024

UTIs will often cause confusion in people over 70. Eta: UTI is Urinary Tract Infection and some people can get confused to the point of hallucinations and delirium. It can cause increased weakness which also leads to falls. u/silly-billy-goat

Urban heat kills way more people in Australia than bushfires. In the 2009 Black Saturday bushfires in Victoria, 173 people died in the fires, but over 300 died of the heat prior to that. Also, most of those deaths occur at night, not during the day. u/Mikes005

Your calf muscles act as a pump for your lymph fluid, which is basically the garbage pick-up and immunity doordash of your body. Without flexing your calf, the fluid has no way of moving against gravity. Each time we walk, the muscles contract, squeezing the fluid back up towards the core for processing.That's why sitting for long periods causes swelling in the legs. u/Orange-Enough

An elevator will go up to the top of the hoist instead of crash to the floor in most catastrophic failures due to the counter weights. u/nuxshktr

If you have sad vegetables(carrots celery)or lettuce that look wilted not bad you can make them crunchy by shocking in ice water. u/weezypins

Powerful explosives are so insensitive to shock that it usually takes a smaller, more sensitive explosive to set them off. u/TheFirstCrew

The world runs on MS Excel u/Boulavogue

When a person “flat lines” you cannot shock them out of it. u/unassunmingtoaster

The sensors in digital cameras (including phones) are monochromatic (they don’t “see” color) and have a tiny color filter on each sensor element so it can detect one of three colors (red, green, blue). Then the image is created by calculating what the other two colors might be based on one color value and the values of the nearest sensors around it. tldr; 2/3 of the color in a digital photo is calculated from the 1/3 that is actual data. u/Meta_My_Data

Police can lie to you, including about whether or not they’re police. u/spozmo

In Archaeology, it’s super awesome and great that you brought stuff to an archaeologist at a local dig site near you of things you found in your backyard or nearby asking us appraise it - but the thing is, we’re actually more interested in the context the item(s) are found. We need/want to see the bigger picture. Arrowheads, flintknaps, trade beads, etc are super cool but they are worth so much more when we can tell if they are part of a hoard, burials site, ceremonial site, etc. u/Sandoriah

In any given nature documentary, the protagonist animal you’re rooting for is ‘played’ by several different ‘actors’ - i.e. that one brown bear’s story is patched together from footage of a bunch of different bears. And in about 90% of the ‘animal reacting’ shots they’re reacting to the camera crew. Nature documentaries are heavily constructed. u/BootsyRootsy

When I worked as a barista: how much syrup is in flavored drinks. At the cafe I worked at, we measured flavoring by grams. If you got a large mocha, it would have like 110 grams of chocolate sauce in it. If you want a little bit of flavor, I suggest only 1 pump. 2 max. u/miss_qeferson

Styrofoam is a brand name, it is polystyrene foam. u/National_Growth_1035

Lab grown diamonds cost $2 per ct. Of electricity to grow. The "value" price has absolutely plummeted on them the last 2 years. Most especially the last 8 months. Don't overpay on them as they all perform. 1 cts currently 6-800. So for the first time in the history of the jewelry world you can officially buy moissanites from "high end" brands that are more expensive than their lab grown diamonds of same quality. The amount of people robbed of value the last 2 years is in the millions and dollar amount unfathomable. Had a guy as recent as March spend $24,000 on a 3 ct. Lab grown online when I was finding them for $5500 at the time. Places are rushing to make money back from buying in bulk. There will be a documentary about this some day. u/xballikeswooshx

Bed bugs don’t make you a nasty person with a nasty home. An infestation isn’t due to a sanitation issue. They’re an imported pest, which means they hitched a ride on something you brought into the house. Usually luggage or furniture. u/LosPetty1992

Most public defenders are competent actually. u/Gridsmack