Gym chick reveals her one-year glute transformation secret.

One person provided three core glute exercises.

A 20-year-old Scottish woman named Sarah (@liftwsarah) is committed to assisting others in achieving enormous physical gains at the gym.

She demonstrated to her followers on her TikTok account ..

how she dramatically changed her glutes in just one year.

She captioned the video, "Realistic one year transformation."

She showed off what her glutes looked like prior to her spectacular makeover while wearing gray camouflage biker shorts.

She then transitioned to a footage of herself flaunting her incredible gains while wearing red biker shorts.