One of the most important rules is to put your weights back on the rack where you found them. There is nothing more frustrating for your fellow body builders than to go to a weight rack and not be able to find the weight that they need. Replace them on the right rack so people don't have to hunt around on other machines for them.

Try not to bounce around from machine to machine. This is usually associated with the newbie who is eager to try everything out and only does a move or two before racing to the next machine. This throws the entire circuit of machine users who are waiting to rotate out of whack time wise. If you use the machine take the time to use it thoroughly and properly.

It is also a cardinal sin in most gymnasiums not to wipe down the gym equipment after you have finished using it. Most gyms have towels and bottles of disinfectant handy that are specifically supposed to be used to wipe down the machines after you work out on them.

Do not walk in front of people using the mirrors to do exercises like squats. It is considered very poor etiquette to block someone's view of himself or herself and you can make people working out very angry. That is because it is important for them to keep their focus on their form while looking at their reflection and getting in the way of their view is a form of sabotage. Do not block other peoples access to weight racks by working out immediately in front of them, have some consideration for others who also want to use the equipment.

If you are male or female it is not considered proper etiquette to hit on people who are working out. A gymnasium is not a "meet market." You are also expected to mind your own business the best you can and not stare at other people no matter how much you admire their well toned muscled or firm physique. If you do bring a friend with you to the gym it is also proper etiquette not to talk too loudly with each other. Yet another no is talking loudly into a cell phone, especially via a Blue Tooth, while people are trying to focus on working out.

Watch your body functions! There is something about bodybuilding that is very macho and in some cases encourages the spontaneous relapse of bodily gases. If this should happen to you make some effort to be discreet about it. Not everybody has a casual attitude towards flatulence in a gym. In fact being chronically flatulent can actually get you kicked out of a gym.

In fact body hygiene is very important in the sport of bodybuilding. You should always remember to bathe. A body building gym is the type of place where you will definitely be told if you smell, which can be very embarrassing!