I'm new to mac, and I just got my MBP about 2 months ago. I keep reading online about how I need to do a power cycle each month to keep the battery fresh (I always have it plugged in and running on AC) and I'm wondering if it matters how fast I drain the battery for the cycle. Does it matter if I drain it really fast by watching a movie? Or does the battery not like to be drained quickly. Thanks!