From coffee to kombucha, these expert-approved drinks could be your new go-tos for sustained energy and focus.

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?

Warm lemon water: Hydrate, boost digestion, and get a dose of vitamin C. Just warm water + lemon juice = a refreshing start!