What are the unwritten rules of the gym?

The basic rule is: think about other people, especially people who train seriously and don't take the time to get fit

Put things back where they belong - this means not just throwing dumbbells around randomly Anywhere on the shelf, and actually in the right place and order. I get really annoyed when I have to search the entire gym for a missing dumbbell or find plates scattered everywhere.

Don’t curl in a squat rack unless you are curling 60kg or more (then I promise to leave you alone)

When someone is curling in a squat rack or hard Don't steal plates while you're setting up by pulling the bar next to setting up the plates for the next few sets

Don't bring your phone into the gym - if you're using your phone for music, keep it on the fly mode, and don't answer calls or sit on a bench staring at your phone to prevent other carefully trained people from using the device.

Don't hoax equipment - especially machines - it's easy to change the weight of a machine so your machine can jump off and let others use it while they take a break between machines. But if someone is squatting 400 pounds, don't force them to share a lighter weight with you - wait until they finish.

Don’t talk? period. Especially for people who are wearing headphones and obviously don't want to be disturbed. But even in other cases - STFU and train. Once you're done, you can chat with your little one in the changing room. Keep a quiet and quiet atmosphere in the gym. Don't yell at every rep either - the occasional involuntary grunt is okay, but don't be that person who uses your voice to irritate others.

After sweating all over, take a towel and wipe the bench. If you have a heavy sweater, bring some wipes and use them

Don't leave trash on the bench - find a corner of the floor to put it in. Benches are places for people to exercise, not storage. The same goes for some women hanging their handbags on the Olympic bar.

Don't hesitate to ask someone the correct way to do something - but wait until you think you can talk to them - preferably when they are walking from the gym to the locker room

There is a reason why the people with the most physique/maximum strength in the gym do the basic movements, which are squats, deadlifts, chins, dips, rows and similar things. Seek them out, and avoid coaches who tell you to deadlift with a curling iron. You can't learn proper deadlift technique using a curling iron.