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Kourtney Kardashian, Instagram

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There's no word as to what Kourtney Kardashian has planned for her birthday this weekend, but we know the E! star is going to be replenished and free of toxins.

The soon-to-be 36-year-old (Kourt's birthday is tomorrow!) revealed through an Instagram post earlier today that she's been detoxing, or teatoxing, lately with Lyfe Tea.

Taking a selfie with a pouch of her new best friend, Kourt writes, "I'm loving the results I'm seeing from my @lyfe_tea all natural teatox! I have way more energy and it helps when I'm craving sweets. I drink the morning @lyfe_tea before my workout. Who's teatoxing with me? #LyfeTea #getfit."

The 14-day Teatox, which retails at $34.95, "is a delicious blend of traditional herbs that aids in digestion and eliminates toxins released from fat cells during weight loss," according to the website.

"Enjoy one cup of Lyfe Tea each morning to feel invigorated for your day. Enjoy a cup of our Detox Lyfe Tea every evening to rid your body and life of toxins."

Last month, Kourtney revealed that she stepped onto the scale and found out she weighs 120 lbs.

"First day that I have seen this number in a while," Kourtney wrote on Instagram. "It's been easier this time than it was last time, for some reason, to lose the weight. It's still in progress, but [Khloe Kardashian] has been working out with me," she told E! News at the time.

"I can't flake on her," Kourtney said of her sister. "She would probably come drag me out of my house."

Sounds about right.

Tune in for new episodes of Keeping Up With the Kardashians, Sundays at 9 p.m., only on E!

PHOTOS: Kourt and Scott's family pics!