Are You Slowing Down Your Own Metabolism? »

Calories are fuel for your body. If you don’t give your body enough fuel, it will start to slow down your metabolism to conserve energy because it thinks you’re starving. When your metabolism is in the slowed state, it’s called “starvation mode.”

The second your body starts to run low on energy, your body slows and enters starvation mode. Some days you burn more calories than others- you work out more one day, walked around more often than usual, or perhaps you laid down all day because you were sick. Perhaps you conserved energy (calories) on that day you were sick, but used them up, plus some, on the day you started feeling better. Even though you ate 1700 calories on that day you worked out, you only consumed 500 calories the day you were sick (I’m guessing you ate some bad sushi the night before.) It is still possible for you to enter starvation mode on the day you ate 1700 calories, because you burned 4,000 calories through your BMR and activity