As in other mammals, thermoregulation is an important aspect of human homeostasis. Most body heat is generated in the deep organs, especially the liver, brain, and heart, and in contraction of skeletal muscles. Humans have been able to adapt to a great diversity of climates, including hot humid and hot arid.
Japanese knotweed is a perennial weed, producing tall canes, up to 2.1m (7ft) in height during the summer. The canes have characteristic purple flecks, and produce branches from nodes along its length. These branches support shovel-shaped leaves.
Japanese Knotweed tastes bitter and sour with energetics being cold and dry. It is considered stimulating and astringent. Japanese Knotweed has also, according to herbalist Stephen Buhner, been proliferating across bioregions immediately preceding the emergence of Lyme disease. I have witnessed this occurrence in the area of central New York State where I live.