Im a night person myself. When I had to wake up at 6AM back in school, trade school & during my first jobs, it always burned me out after a while. I remember even when I was a kid and later a teen, I always immediately reverted back to a night schedule during summer holidays after just a week or two. Now I have better hours, but if you only let me Id wake up even later still. I keep a regular schedule & always get 8 hours of sleep. Being a night person doasnt mean you are sleep deprived, or that one cant stick to a schedule. I stick to my personal circadian rhythm, no two peoples rhythms are completed alike. That is a complete myth & a unhealthy generalization.