1 If you add music and files to your iPod while you are charging the battery, it will take longer for it to charge. 2  Before using your iPod nano for the first time, it is important that you let it charge for a minimum of three hours. 3  If you do not, you can weaken the battery, giving it a shorter lifespan.
Too much iron will usually turn the blood black. However, if there is liver failure, and it's seeping into the blood stream that too can cause the blood to turn black as it becomes over loaded with toxins. Put simply it's the blood is overloaded with toxins and other nutrients that the body can't process entirely.
Blood stays red when it exits the body because the blood is fresh. When youâre bleeding black blood, this indicates that the blood is older and has not exited the body quickly. Ultimately, the blood begins to dry and turns a dark red, brown, or even a black color. Black blood is not a cause of concern or worry unless itâs frequent and recurring. Views Â· View Upvotes.