Physical activity can be a great way to prevent and treat back pain – but some exercises may do more harm than good.

published May 18th 2016, 7:28 pm, by Sarah Frier (Bloomberg) —Facebook Inc. Chief Executive Officer Mark Zuckerberg met with political conservatives to explain how the social network comes up with its trending news topics, seeking to quell concerns that liberal-leaning news and sources were favored by the company’s editors. “I