From what I can remember of my gym dietitians approved,
strict but effective,
healthfully balanced muscle building and fat loss diet;
which I eventually became bored with after a few years of difficult self-discipline...

NO carbs after 6 p.m.

Go to bed every night suffering pangs of Hunger.

Have willpower or be fat.

Weight training lifestyle for health and fitness is positive and beneficial.
Despite being so puritanicly spartan and boring..

But competition bodybuilders have a self-destructive potentially suicidal streak
when they undertake health damaging rapid fat loss starvation and dehydration regimes in preparation for ripped muscle stage shows and photo shoots.

That is unnatural and in extreme cases lethal.

Particularly for boxers and other martial artists desperate to drastically lose weight overnight
in order to qualify for pre fight weigh-ins ...