Top 10 unbelievable historical concurrencies. There are more than 1,450 species of bamboo plants. Of these, there are two basic types: those that spread and those that clump. Spreading bamboo, also called running bamboo, will cover any distance up to 100 feet (30.5 m) within a relatively short time period.
yawning (yanâ²ing) yawning An involuntary and often infectious act of slow, deep inspiration accompanied by an almost uncontrollable desire to open the mouth widely.
Why do we yawn? Yawning might serve a social function (to communicate boredom) and a physiological function (regulation of body state). The study of yawning is anything but boring. It boasts a rich history of theories that go back to Antiquity, but thus far the biological function of yawning remains a mystery.