Research shows that getting out into the Great Outdoors is good for you. It would, wouldn't it? Research hardly ever shows that sitting in a comfortable chair with Netflix and chips is good for you, and that's why people don't like science. But there's a case for staying in, and this is it.
Rabid wolves
Although slavering mongrels are not usually a problem in the city unless the bars have just closed, the fact is, all dogs are descended from wolves. Some of them have descended quite a long way, but even a teacup schnoodle is only a couple of meals away from going full Cujo. Who let the dogs out? Everyone, so you're much safer to stay inside.
Weather bombs
There's good reason for the phrase, "you'll catch your death". A MetService warning may save you from storms, but 100 years of industrialisation has given us ordinary weather to die for. Unfiltered UV rays, acid rain, chemtrails, smog; the answer is blowing in the wind, as long as the question is, "what will kill me?"