I have learned about the power of energy to heal and create a sense of well-being. I find myself focusing on positive energy and consequently generate positive energy. —G.W.

Qigong balances yin and yang: it’s simultaneously gentle and challenging, movement and stillness, concentration and letting go. —L.A.

I’m 62, overweight, with arthritis severe enough to have required knee replacements in my 50s. So I need low-impact ways of maintaining strength and flexibility. and Kirstin’s qigong class is just a great workout for me. I have less pain from ordinary activities, and less pain means more activity, which leads to easier weight loss, better sleep, brighter mood. I feel younger and more balanced. —K.C.

By awakening to the body’s inherent sense of balance, I have sharpened my mental focus and have learned new skills to help quiet the mind. —R.O.

When I began Dayan Qigong in September of 2008, I had such bad aches in my joints— especially my hands and legs—that I was seeing my acupuncturist every week. Now, almost 10 months later, I hardly see him at all. He says, “Good! Do more qigong and less acupuncture!” Because I practice Dayan Qigong on a daily basis, I am pain free. Dayan Qigong is a graceful, effortless practice that for me is like flying. I would invite anyone to try this lovely yet strongly effective Qigong practice. Once you learn the basics it feels so good that you will want to do it consistently. Your body and heart will begin to feel so clear it will glisten. I know mine does. —B.A.

Kirstin is a first-rate teacher. She has a detailed knowledge of the practice, and her love of teaching it to others is very evident. Her explanations are clear and thorough. She is unfailingly patient, and she establishes great rapport with her students. —M.W.

Practicing is easy: The form just sort of pulls you along and you want to do it. —G.M.

As a teacher, Kirstin is calm, focused and methodical, but with a wonderful buoyant sense of humor that makes class feel like play. She not only permits but encourages students to tailor the practice to their individual needs and capabilities, and to be gentle with themselves. She also manages to weave into the flow a great deal of information about the philosophy and key concepts of Chinese medicine, which gives other dimensions of meaning to the practice. —K.C.