The newest health wearable will tell you for sure.
WearSens is a metal necklace that records everything you eat and drink, and then sends the data to your smartphone. The phone vibrates when you’re eating or drinking (or, for that matter, smoking) too much!
It's easier than keeping a food diary, says Majid Sarrafzadeh, the UCLA computer scientist behind the tool, as reported in the New York Daily News. “People do not keep a diary after the first few weeks because it is simply hard to do," he told the publication. "With our system, you just wear it and forget about it."