It probably happened to you that you took the meat out of the freezer, but did not have time to cook it, so you put it back in the freezer at the end of the day.
However, this habit is not healthy at all, and this is why meat packaging is often labeled “do not refreeze.”
Once meat is thawed, it should go to the oven, the pan, or on the skewer, not back into the freezer. The reason is that meat contains bacteria that do not die during freezing but simply hibernate. When the meat is thawed, the bacteria start multiplying fast at room temperature.
The quality of the meat will deteriorate during every freeze, and the bacteria it contains may be hazardous to health.
In addition, the taste of the meat changes after thawing.
To avoid these hazards, store and freeze the meat in smaller portions, so you only have to thaw the quantity you will use at one time.