There were some vague studies that came out years ago that claimed going to bed super early and waking up super early led to better health. What it really does is maximizes the time you have to work, or grind as the manosphere touts it. While leaving less time for leisure activities and spending time with your family.

An 8-4 sleep schedule means the only thing you have time to do is, workout, so you’re a better worker and then go to work. Then most 4am ppl brag about working 12 hours a day and boom. One extra cog in the machine.