I see the quality of life people have when they start approaching 100, and lemme tell you I wouldn't want an extra 20 years of that. Living in the US sucks for healthcare, you're gonna be miserable if you live that long.
So instead of being a prick like the person you're actually replying to I'll answer you. Blue zones are areas where the population regularly reaches over 100. The point they're making is the people over 100 in those areas usually seem to be doing pretty well, moving, some even run, and die suddenly (things just happen to turn downhill very fast when you're that old, nothing sinister implied)