How is it possible?

[Kimikryo]

because i derped here the short version of how to level a job from 1-50 in 2 days


No job, No social life (outside of the game), willing to either play sitting on the toilet or wear diapers, have stockpiles of instant food and water + water cooker in your room, have tons of low level quests open to get exp boost, do each and every haste once for exp boost, do everything from challenge log that gives DoW DoM exp, have DoH so you can make your own HQ gear and repair it to safe gil, do dungeons and fates, have one Dow or DoM on 50, have a rested bonus from staying 30+ days in town so you can level 1-43 with a fixed 100% exp bonus. Heat of the Battle from FC, food for 3% exp buff

sounds like fun doesn't it

Almost each time I ran a dungeon I'd gain two levels.

even with rested bonus, this sounds like goobbue dung.
source? I did it, 2 levels per dungeon? only if i was like 100 exp away from level up 1 and got massive exp with bonus from a first time runner. 140k exp for tanking iffrit? yay .. how many level usp did i get? 1