Britney Spears has to be in peak physical condition when she performs in Las Vegas, and like scores of other celebrities from David Beckham and Scarlett Johansson to Hugh Jackman, she’s crazy about HIIT, the latest fitness trend.

Britney Spears has to be in peak physical condition when she performs in Las Vegas, and like scores of other celebrities from David Beckham and Scarlett Johansson to Hugh Jackman, she’s crazy about HIIT, the latest fitness trend.
Britney Spears is talking for the first time about a widely publicized 2007 mental breakdown that led to her hospitalization. She says anxiety was at the root of her problem, caused by the constant feeling that she was being judged and tested by everyone. She says the expectations began at an early age and caused her to be “overwhelmed” by the smallest things.