Helloo. I've only had my MBP 13 for 4-5 days... and already the battery has cycled 3 times! That's almost once a day... isn't that a lot? How is it supposed to last me 5 years? Is it the way i'm charging it? I charge it FULL.. then run it down to almost zero.. and then recharge... each time i recharge.. it's a cycle??!? is that bad? should i just keep it plugged in then? thanks!