高中英语教学：Dry Brushing, gua sha.docx

Dry Brushing, Body Scraping, Gua Sha: Lymphatic Health Is All the Rage By Hannah Seo Scroll through TikTok and Instagram for long enough and you’ll likely find someone scraping, brushing or massaging their skin in pursuit of better health or an enhanced appearance. Testimonies abound --- about body scraping to loosen stiff limbs, gua sha for a sculpted jawline, vibrating facial massagers to reduce puffiness, dry bushing for ‘detoxing.’ Suchposts have amassed tens of millions of views on TikTok in recent years, with celebrities like Gwyneth Paltrow and Elle Macpherson attesting to their effectiveness. All of these trendy techniques center on the same concept: promoting the circulation of a colorless, watery fluid called lymph, which ferries white blood cells to and from the body’s organs and transports wastes from cells and tissues to the lymph nodes, where it is filtered and fed back into the bloodstream. The sweeping movement of dry brushing—in which you’re supposed to whisk a stiff-bristled brush in small circles all over your body—and the pulses of a vibrating facial massager are supposed to gently knead out any potential blockages in lymphatic flow. Gua sha, in which you scrape a stone or metal tool along the contours of your face; body scraping, which is a full-body version of gua sha that uses similar tools; and jade rolling, in which you roll a rounded stone tool over your face, are techniques intended to physically push, or drain, lymphatic fluid toward the lymph nodes, where it is filtered and then moved back into the bloodstream. Missing from the testimonies are answers to some key questions: Do these practices actually stimulate lymphatic flow? And if so, what results can you really expect to get? How the lymphatic system works In many ways, the lymphatic system is the underappreciated sibling of the circulatory system, less well-known and less researched than its counterpart, said Shan Liao, associate professor of immunology at the University of Calgary