Some women used to complain that she couldn't lose weight. Every week she headed to the gym, often three times a week.
She didn't eat unhealthily – the rest of the family ate exactly the same meals, and did a fraction of the exercise she did. She ought to have been the slimmest of the bunch: that she remained overweight was a frustration to her, and a mystery to all of us.
Exercise is the miracle cure we’ve always had, but for too long we’ve neglected to take our recommended dose. Our health is now suffering as a consequence.