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.
Vigorous exercise, such as walking for an hour at a fast pace, is more likely to stoke your metabolism than a 10-minute amble around the block. Studies have shown contradictory results on the actual benefit of exercise, such as walking, on metabolism.