Britney Spears is staying fit with a little help from her past cover of "Tom's Diner."

The 37-year-old pop star posted a video of herself on Instagram Friday (July 12) working out to her own version of Susanne Vega's 1987 classic hit song. Spears recorded "Tom's Diner" for Giorgio Moroder's 2015 collaborations album, Déjà Vu.

"This song came out when I was 6 years old .... I was listening to it one day in my car, and called my manager and said hey this song is cool ... so I recorded it .... but forgot until my phone pulled it up the other day and I was like, damn forgot about that --‍??Either way, great song !!!" Spears captioned the clip.

The pop star has been keeping healthy since checking into a 30-day mental health treatment facility in early April following news of her father's health struggles. Earlier this month, she also posted a chart of foods that have helped her with various conditions.