No drugs, no alcohol, celibate, exercise frequently both lift and cardio, and was tested for a quarter of a day with g test and apparently I beat 99.6% at it. My greatest vice is sleep deprivation. First time I stayed up late was 4 years old, the first all-nighter I pulled was 8 years old. And at 14->15 I slept 3 hours a night for half a year, like really messy insane fucked up sleep schedule. The g test was in the middle of this all.

My question to you is this:
what effect would lifelong 4->20 sleep deprivation have on me, with all other lifestyle quite healthy?