Here’s why you shouldn’t believe everything that your fitness watch says: Shockingly, studies reveal a staggering 23-80% margin of error in these calculations. For example, your calorific output was 1000 kilocalories whereas the watch may show the output in the range of 200-800 kilocalories! One study even mentions “No brand fell within the acceptable accuracy limits for energy expenditure.” (PMC7509623). The implications of such discrepancies can impact your fitness goals and lead you down a path of misguided efforts. So do not rely on these devices as much for calories burnt. There is another concept or a feature as you may call it, which is active calories vs. total calories. Total calories is the amount of calories burnt in a day and active calories, which represent the energy expended during physical activity/workout. Purpose of exercise should not be to burn calories. Instead, exercises must be performed to increase strength, flexibility, mobility, to increase speed and endu...