There’s a reason why you’re not losing weight
Your boot-camp class won’t change the number on the scale if you’re committing these errors outside of your sweat sessions:
You think about burn only in the gym: “You get strong in the gym—but you get lean in life,” says celebrity trainer Harley Pasternak, who encourages his clients to wear pedometers and log more than 10,000 steps per day.
You aren’t food-focused: A recent study in Current Biology suggests there’s a limit to how many calories we burn through physical activity; after torching more than a moderate amount, our bodies make it hard to let precious energy go. The fix is in the kitchen: “To drop 1 to 2 pounds a week, cut about 2,000 calories weekly through diet and exercise,” says Jordan.
You’re not as active as you think: One study out of York University in Toronto found that even when people were told what “vigorous” exertion should feel like, they still underestimated how much effort a physical activity actually required. A heart-rate monitor can help give you a more realistic idea of your effort and burn.
Fitness – Health.com