The 5 second rule is legit, as long as you interpret it reasonably. Of course it depends on how sticky/moist the food is and the type of surface but the longer a piece of food remains on the ground in general, the more bacteria itll pick up. Of course getting it within 5 seconds won't make the number of bacteria 0, but in general if you can grab it fast enough and it passes a visible inspection for not picking up dirt and hair, and if its a delicious high demand food item, eh. It probably won't kill you. Well it wouldnt kill me I should say. My immune system is awesome.

Avoiding cold temps to avoid colds/viruses is terrible advice though. Cold shock can increase your metabolism, immune system and enhance all sorts of automatic internal responses.

Wait are you saying that DOESNT work?

That works.