My 7 Bio-Wonders!(2) <4> Nowadays, I lose my hairs much than any other season. I worried about that, so I got hair cut and scalp massage but it was no use :'( It turned out my losing hairs are due to the season. Because of the cold and dry weather, my scalps became weak and my body feels stress during adaption to cold. Now I can stop worrying about my hair! <http://imnews.imbc.com/replay/nwtoday/article/3375794_5782.html> <5> In 2009, when I was 16, novel swine-origin influenza A (H1N1) hit all around the world. H1N1, the new virus that was born by mutation of influenza type A virus, is the respiratory disease that infects worldwide people. Many schools closed for several days because of the infection of H1N1 from students to students. (My school also closed for 2-3 days at October!) Until the vaccination of H1N1 was developed on November, 2009, H1N1 made the world be trembled of infection and even death by this disease. <http://science.dongascience.com/articleviews/special-view?acIdx=9026&acCode=1&year=2013> <6> Sleep is one of the most important factors for people to live. There is study that we remove the toxic substances during sleep. However, I can’t sleep enough because of early classes, assignments and exam. I should sleep enough much to live vigorously after end of this semester. http://science.dongascience.com/articleviews/article-view?acIdx=12724&acCode=4&year=2013&month=12&page=1 <7> Students often drink energy drink when they have to stay up all night because of exam, assignments, etc. Energy drink is a beverage which contains high concentration of caffeine and taurine. People only drink energy drink with thinking caffeine make them stay up. However, there is a research that energy drinks make contraction of heart increase. It needs more study to reveal about long-term effects of energy drink to our heart. <http://www.sciencetimes.co.kr/article.do?todo=view&pageno=1&searchatclass2=117&atidx=73003&backList=list&seriesidx=list&menuclassidx=117&%BA%B8%B0%C7%A1%A4%C0%C7%C7%D0=%BA%B8%B0%C7%A1%A4%C0%C7%C7%D0>