Much of the US has a combination of pretty low population densities, and a very hyperactive media, which may tend toward it feeling very overblown for you. I think the fact that the major international agencies are now terming it a pandemic is worth listening to though. It's a balance - the panic buying, and interrupted news broadcasts, and so on are silly, but on the other hand I've seen some people liken it to the flu which just clearly doesn't check out factually any more. The death rate is quite a lot of times higher than flu, it has a longer incubation and spreads very fast. In Italy the death toll is genuinely getting pretty high despite very extreme lockdown measures, and Austria's number of cases is growing very rapidly now, especially in densely populated cities (like, say, where I live). It's hard to get the balance right - there's been some incredibly stupid hysteria, but one shouldn't stick fingers in one's ears and pretend nothing is happening either, isolation and containment measures will help ensure healthcare systems don't get overloaded by this thing.
I don't see that there's much need to avoid exercise - gyms perhaps, but I don't see why walking, running, etc should be per se impossible, it rarely involves close enough person contact to be much of a threat. I'm hoping to keep going to writing group meetings, but we'll see how bad things get.