Chicago microbiologist Nicholas Aicher tested how the so-called “five-second rule” compared to longer and shorter-timed drops.

That's where the 5-second rule comes in—and no, we don't mean the rule about eating food after you dropped it on the floor. It’s become pretty popular on platforms like TikTok and it’s easy to see why ...

The 5-Second Rule is not blanket permission to be impulsive. For instance, tackling projects that need careful planning or ...