swear by

"If the crust starts to get too dark, I swear by a ring of foil wrapped around the crust to protect it. You can keep them and reuse them many times too."

Many athletes swear by it, including Michael Phelps and Olympic gymnast Alex Naddour.

For those people, many on Reddit swear by the “gray rock” method.

There are posters who swear by headbands,highlights, lowlights or stripping — processes that replace your current color with your natural one by matching the shade of your roots or removing dye.

Many influencers, athletes, and regular folks swear by ketogenic diets—skimping on carbs and feasting on fats to quickly shed pounds and improve their metabolism.