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On manual wind watches you definitely can overwind. The end of the spring is usually fixed to the inside of the barrel and over winding can break it off.
On automatics, because the winding mechanism can be constantly winding the spring, the inside of the barrel wall usually has notches and the end of the spring drags along the wall and ratchets into them. So you’ll feel resistance when it’s fully wound but you can keep winding, even though it’s not the best thing for it.
Stupid question coming; can you overwind your watch or is there’s a safety feature to prevent this?