Wearable fitness trackers that monitor your heart rate levels, like Fitbits, might not actually help you lose weight, a new study has found. Everyone panic!!!!!!!(Emotional distress will actually raise your heartbeat, so you're welcome.)
The study involved two groups of overweight or obese young adults who were trying to lose weight through diet and exercise. One group wore fitness trackers and the other did not. Both groups exercised the same amount, but after two years, the people with fitness trackers lost less weight.