The hardest people to walk away from aren’t always the obviously toxic ones, according to two studies: research found people’s blood pressure spiked highest specifically around “ambivalent” friends, sometimes warm and sometimes upsetting, more than around consistently negative ones, and a separate s

The people draining your health most might not be the obvious villains—they're the ones who keep you guessing. The post The hardest people to walk away from aren’t always the obviously toxic ones, according to two studies: research found people’s blood pressu…