qqp question1: I'm 16 and I have been sleeping for only 6 hours a night for 2 years. Will the negative effects of lack of sleep go away if I start sleeping more? question2: I get about 6 hours average of sleep every night as a 15 year old. I've read somewhere that sleep deprivation leads to a declination of your IQ. If I've been doing this for a while, is the effect permanent?