Power feeding is forcing your snake to eat rat after rat.
(i.e shoving a secondary rat right behind the first one as it's being eaten.)
I feed my snakes under 500 grams a rat of appropriate size every 4-5 days. Then they're bumped up to a 7-10 day schedule once they hit 500 grams.
My snakes regulate their feeding really well. If I tried offering food too often, they will refuse the meal.