With all Japanese teas (Gyokuro, Sencha, Genmaicha, and Houjicha) except for Matcha, you can ingest large amounts of beneficial constituents by brewing three times. It is said that 30% to 40% of the healthy nutrients are extracted into water by brewing tea leaves three times.
Matcha is ground into powder and completely dissolved in water when brewed (prepared), therefore you drink 100% of the healthy nutrients without throwing away the leaves as one does with other teas.
Besides, by drinking Matcha you can also ingest oil soluble constituents (Vitamin A, Vitamin E, Beta-carotene, etc.), which are not extracted into water when brewed.
To brew one cup of tea (Gyokuro, Sencha, Genmaicha, and Houjicha), about 3 to 4g (0.11 to 0.14oz) of tea leaves are used. To prepare one bowl (cup) of Matcha, about 2g (0.07oz) of tea leaves are used. Therefore, if you are interested in ingesting these nutrients most efficiently, you can do so by drinking Matcha, more so than with other teas.

(check Natural Elements and Nutrients of Matcha)

Because Matcha is dissolved in water and consumed in its entirety, it is needless to dispose of used tea leaves. It is much easier than other teas (Gyokuro, Sencha, Genmaicha, and Houjicha).
And to prepare Matcha, much equipment or tea ware is not needed. To prepare Matcha, only the Chasen (Bamboo Whisk) is required. Matcha Bowl and Sifter are not completely necessary. They are useful to prepare Matcha flavorfully and easily, but not essential.
And once you learn how to prepare Matcha, it is very quick and easy to prepare flavorful Matcha.

(check Choosing Tea Ware for Matcha)
(check Preparation of Matcha)

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From both a historical and a cultural perspective, and from a practical viewpoint as well, the world of Matcha is truly vast. Japanese tea ceremony, formalized by Rikyu Sen in 16th century Japan, made an enormous impact on various aspects of Japanese culture, including architectural style, costume, cuisine, porcelain, lacquer, painting, literature, and so on. It will certainly increase your appreciation of Japanese tea to learn about the Japanese tea ceremony and its history.
(visit Japanese Tea Ceremony page)

Thanks to the influence of Japanese tea ceremony on arts and crafts in Japan, there are so many Matcha bowls and accessories available to deepen and enrich your enjoyment of tea.
(visit Matcha Bowls / Accessories shopping category)

There are many available grades of Matcha and furthermore, one can purchase Matcha picked by hand or trimmed by machine, shaded from sunlight by TANA canopy or JIKAGISE covering, KURADASHI aged or regular, and so on. Tea connoisseurs creatively use some types of Matcha for daily use, another type for special occasion, and so on.
(visit Four Seasons of Green Tea page)

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Matcha contains much Theanine, Catechin, and Caffeine, so Matcha is not only healthful but also very suitable for increasing alertness and improving concentration which may benefit mental and physical performance.
(check Natural Elements and Nutrients of Matcha)

Theanine is one kind of amino acid, which helps you relax the mind and body. After your mind and body relax, Caffeine works to improve your concentration. It takes about 30 minutes to have an effect and personally speaking, the concentration will continue 1.5 hours to 4.5 hours.