A miscarriage can be a common cause of brown to black vaginal bleeding. Not all the women realize that they are pregnant until there is an abnormally heavy bleed particularly consisting of large clots or the color varying from the normal period blood.
Boost Your Metabolism in 15 Minutes 4 Moves to Rev Your Metabolism Kick calorie burning into overdrive with this quick full-body workout Read more: Exercises that Boost Your Metabolism - How to Boost Your Metabolism - Woman's Day.
While you may burn more calories running for half an hour than lifting weights, weight training has a bigger impact on your metabolism. Your metabolic rate is the speed at which your body burns calories, and the higher it is, the quicker you lose fat.