How can drinking tea help relieve stress?

Any warm drink is a super stress soother, and curling up with a cup of aromatic jasmine tea can make the whole day go away. But with tea, it’s not just the warmth at work. Skin-friendly tea also has two magic antistress ingredients: L-theanine, an amino acid that produces a relaxed but alert frame of mind, and catechins, antioxidants that, among other things, lower corticosterone, a stress hormone.

From The Mind-Beauty Connection: 9 Days to Less Stress, Gorgeous Skin, and a Whole New You by Amy Wechsler.