Does the bolt need to be loosened by half a turn after being tightened?

Is this statement correct?

Is there any scientific basis?

 

There has always been a saying that bolts cannot be completely tightened. After tightening the bolts, they need to be loosened by half a turn so that they can be more firm.

 

There are two situations when tightening the bolts, one is that has broken through the limit and entered the yield stage, the bolt will be permanently deformed.  At this time loosening it by half a turn is of no use anymore.

 

On the contrary, in the other case, if it is not yet at the limit, the loosened bolt will lose some toughness and be more likely to break.

 

So no matter if the bolts is tightened over the limit or not, loosening it by half a turn is harmful and not beneficial.