They don't mention exactly what they mean by tea in this abstract, so I kind of assume they're talking about typical tea on the green to black spectrum, and pro

They don't mention exactly what they mean by tea in this abstract, so I kind of assume they're talking about typical tea on the green to black spectrum, and probably caffeinated. They do mention herbal teas at one point, but there are lots of different kinds of herbal teas. I drink a lot of lemon ginger, mint, and roasted dandelion root (my favorite), and also some chai decaf. I wonder if these kinds of teas show similar effects. I like to have a yerba mate every once in a while too but usually have trouble sleeping afterwards.