I've been drinking green and oolong teas about 3x per day, going through my special order teas at an alarming rate. Recently I decided to try doing multiple extractions. I know that with each extraction the caffeine is less, but I'm wondering if anyone knows anything about the benefits of the 2nd or 3rd extraction vs. the first regarding phytonutrients that research has tagged as helping reduce blood sugar and promote fat loss.

Am I harvesting additional benefits along with additional tea, or are the 2nd & 3rd extractions pretty much just weak versions of the first, in terms of beneficial components? It tastes fine and costs less. I'm just curious about what I'm actually drinking when I extract more tea from the same amount of leaves.