Okay, so I got my Macbook Pro on Friday.. That makes it about 5 days old. And yes, it was brand new. Paid full price. Ugh... Anyways, istat nano is telling me that my battery health is at 99%. When I checked it previously, it was at 100%! What can I do to get its health back to 100%? Should I drain the battery, or restart the computer? I usually just close it and leave it on the charger at night. Is that bad?