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.
This allows the body to go into fat-burning mode. Get enough aerobic exercise. As much as you can is really a help for your metabolism, and if you do it in the morning, you'll raise your metabolism all day. Build muscle with weight training or resistance exercise.