In general, for those who have just started to do yoga, they may wish to choose a thicker mat, such as 6mm or 8mm thick, in order to prevent sports injuries. But also can not choose too thick mat because of fear of pain, too thick easy to lose balance in the practice, the center of gravity is unstable, resulting in sprain. If you have a certain basis, you can choose a yoga mat with a thickness of 3.5mm or so. Hardcore fans and professional yogis generally use 1.5-4 mm thick yoga MATS. When buying a yoga mat, pinch it with your thumb and index finger to try how soft and hard it is. The more flexible the yoga mat is, the more protective it is to the human body. Moreover, if you are very afraid of pain, you can use a relatively thick yoga mat to practice.