Researchers create an accurate system for counting calories burned during exercise

One of the challenges for those who exercise and watch what they eat in an effort to lose weight is knowing exactly how many calories are burned during exercise. There are numerous apps and wearable devices, such as the Apple Watch and Fitbit, that claim to show the number of calories burned during a workout. The problem is that those calorie counting systems are often highly inaccurate, making it difficult to count calories in and calories out with accuracy.