Sometimes, health tracking accuracy is overrated

I would like to thank a decade of running for my apparently beefy legs. This is Optimizer, a weekly newsletter sent from Verge senior reviewer Victoria Song that dissects and discusses the latest gizmos and potions that swear they're going to change your life. Opt in for Optimizer here. About three years ago, a doctor told me I had to lose abdominal fat. She didn't care about my lower belly fat. That, she said while pinching me, was subcutaneous fat. What she wanted was for me to target about fi