I really like this stuff! I"ve used green tea powder for smoothies for years and I find this brand to be effective at keeping sustained energy throughout the day. It has a very definitive taste to it, but it's easy to cover up if you don't like it. (I don't mind the taste, but my protein powder pretty much overwhelms it.) It's definitely worth trying for a more sustained, less jittery caffeine boost.
Matcha (抹茶, Japanese pronunciation pronounced [mat.tɕa], English /ˈmætʃə/[1][i]) is finely ground powder of specially grown and processed green tea leaves. It is special in two aspects of farming and processing: the green tea plants for matcha are shade-grown for about three weeks before harvest and the stems and veins are removed in processing. During shaded growth, the plant Camellia sinensis produces more theanine and caffeine. The powdered form of matcha is consumed differently from tea leaves or tea bags, and is dissolved in a liquid, typically water or milk.
A study suggests that theanine found in matcha tea acts as a neurotransmitter. It exerts a calming effect on the brain without causing any drowsiness. This soothing effect helped the Buddhist monks in maintaining deep concentration during their meditation sessions and was the main reason behind its popularity. Another study has revealed the anti-stress effects of theanine present in this tea, which assists in reducing the physiological and psychological stress responses by inhibiting the neuron excitation. Matcha tea is also believed to boost memory and concentration.
Drinking green tea or taking green tea supplements decreases the blood concentration of total cholesterol (about 3–7 mg/dL), LDL cholesterol (about 2 mg/dL), and does not affect the concentration of HDL cholesterol or triglycerides.[23][22][26] A 2013 Cochrane meta-analysis of longer-term randomized controlled trials (>3 months duration) concluded that green tea consumption lowers total and LDL cholesterol concentrations in the blood.[23]

Red rooibos tea is rich in calcium, manganese, and fluoride minerals that assist in maintaining good bone structure and stronger teeth. By increasing the bioavailability of minerals in your system, you can reduce your chances of developing conditions like arthritis, osteoporosis, and chronic joint pain. Manganese actually works on a deeper level and stimulates the enzymes which are required to build new bones and repair damages.
I was recently diagnosed with cancer and the type I have affects my hormones and caused my weight to actually increase. My mother told me about a report she read on dandelion root tea and it's healing effects for cancer patients so I picked up a box of this at the grocery store. I've been drinking it for about a month now, 2 to 5 cups a day (no sugar) and I can see my symptoms improving. It also helped with the weight issue. I've dropped 16 pounds since I started drinking it. Getting the product from subscribe and save costs me about half of what the grocery store charges. I plan on drinking this very tea for the rest of my life. Definitely helps your body.

Evidence pointing to a boost exists in abundance. But first, let’s clarify what matcha is to begin with — in case you were trapped under something heavy these past few years. It’s basically green tea, derived from the leaves of the Camellia sinensis plant, finely ground. Oxford’s Living Dictionary cites its origins in Japan as a combo of two terms, “from matsu ‘to rub’ + cha ‘tea’, from Chinese (Mandarin dialect) chá (see tea).” Matcha masters House of Matcha say the beverage is steeped in history. “Samurai warriors drank matcha green tea before going into battle because of its energizing properties, and Zen Buddhist monks drank it as a way to flow through meditation while remaining alert,” reads the website.

Certain studies indicate that intake of flavan-3-ols and/or anthocyanidins found in green tea may improve glycemic control and help normalize blood sugar levels. Due to its anti-inflammatory properties, green tea is believed to be beneficial for those who are at-risk or diagnosed with type 2 diabetes. Green tea’s catechins, especially EGCG, appear to have anti-obesity and antidiabetic effects.
Rooibos tea is anti-inflammatory in nature, which means that it reduces blood pressure and scavenges free radicals like other antioxidants. Quercetin, another powerful antioxidant found in rooibos tea, has been linked to preventing a wide variety of heart conditions. It promotes an increase in HDL cholesterol (good cholesterol) and inhibits the LDL cholesterol (bad cholesterol) from binding to the walls of arteries and blood vessels.