Masking tape, cellophane packing tape, duct tape, electrical tape. We use them for different reasons, but they have one thing in common. After you tear off a piece, the end seals itself to the roll, ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Like many households, ...