Oolong tea, made from more mature leaves, usually have less caffeine than green tea. On the flip side, mature leaves contain less theanine, a sweet, natural relaxant that makes a tea much less caffeinated than it actually is. That is the theory, anyway.
The highest point in Asia is Mt. Everest which is 8,850 meters above sea level. And Asia's lowest point is the Dead Sea which is 400 meters below sea level.
This small, poor country is the least visited in Central Asia. Half the country lies above 9,800ft, and the Fann and Pamir mountain ranges are ideal for extreme hiking and camping. The Pamir Highway (also known, more prosaically, as the M41) is a celebrated update of the original Silk Road.