Britney Spears cleans her colon 3 times a week.

Didn't her steady diet of tacos and candy do the trick?
Entertainmentwise:
Britney Spears’ has reportedly embraced regular colon cleansing sessions as part of her new and improved lifestyle, according to reports.
The singer is apparently having lingering traces of Frappucino and Cheeto flushed out of her system at a Beverly Hills clinic as part of a new health kick.
A source at the clinic tells The Mirror: "Cleansing a few times a week gets rid of lingering stuff in the colon.
"Britney's had the treatment before and says it makes her feel great, more upbeat and energetic."