lose sleep over (someone or something)
to worry about someone or something so that you cannot sleep
I have been losing sleep over my recent problems at work.
Precautions while using Microwaves
Ovens used for laboratory applications
Ovens used for laboratory applications CANNOT be used for food preparation. Conversely, food preparation ovens should never be used for other applications. Microwave ovens in laboratories should be appropriately labeled for food or non food use.