Functional or "healthy" drinks claim to calm you down, boost your energy, or improve brain health. Celebrities from Katy Perry to Bella Hadid have embraced them. But are they actually worth it?
![](https://i.kinja-img.com/image/upload/c_fit,q_80,w_636/035af77db0f2b482d8f8572437cb6239.jpg)
Nick Offerman already picked up an Emmy for his guest-starring role on HBO’s The Last of Us—and considering how acclaimed his turn in