Muscle twitching is caused by minor muscle contractions in the area, or uncontrollable twitching of a muscle group that is served by a single motor nerve fiber. Muscle twitches are minor and often go unnoticed. Some are common and normal. Others are signs of a nervous system disorder.
Yerba mate has a slight astringent bitter taste due to the high tannin content of the leaves. Researchers have found that leaves from younger plants possess more tannins than leaves from older, more mature trees.
Yerba mate is a traditional drink made from the dried leaves of an evergreen holly, Ilex paraguariensis, a native plant of South America. This plant is found in the wild but is also cultivated on plantations similarly to familiar kinds of tea. In countries where yerba mate is widely consumed, it assumes the cultural importance exemplified by coffee cafÃ©s and Japanese tea ceremonies. Drinking yerba mate tea is often a social event.