Saturn transit to the 6th bhva

Saturn Gochara impacts at three levels

Jivatma

Vritti

Samsara

Saturn Transit to the 6th bhava

Jivatma:

overcoming opponents, 

ability to recuperate, process of enduring discomfort or not, dealing with self imposed or other imposed stress, 

ability to develop a sustain obligatory routine

Capacity to depend on or accept the help of others

How one uses their core/manner of using core (abb/lower back)

Vritti (behavior)

Tough, competitive, insurmountable, well placed, well rehearsed, healthy, untouring, resilient

Greedy, challenging, combatitive, cranky, floppy, careless, unhealthy

Environment

Debts, loan, mortgage, health, accidents, fast, enemies, lawsuits, servants, employee, routine care, routine work, arduous exercise, strenuous sports, aunts & uncles

Note:
If the 6th lord in lagna, transit of Saturn in 6th will be a big deal as it is 6th from 6th