1. Comfort: The 8mm yoga mat is thicker, which can provide more buffer and support, making the practitioner's body less vulnerable to injury. For sports that require a lot of bending and stretching, such as back bending and handstand, thicker yoga mats can provide better protection.
2. Stability: For some difficult yoga exercises, such as scaffolding and handstand, a 6mm yoga mat is more suitable, because these exercises need more stability and support. A 6mm yoga mat can better provide this support and make the exercise more stable and safe.
3. Weight and portability: 8mm yoga mat is heavier than 6mm yoga mat, which is more difficult to carry and needs more storage space. If you need to carry a yoga mat with you, a 6mm or thinner yoga mat may be more suitable for you.
To sum up, if you are a beginner or need more support and comfort when practicing, 8mm yoga mat may be more suitable. If you are doing more difficult exercises, a 6 mm yoga mat may be better. But if you need to carry a yoga mat with you, a thinner yoga mat may be more convenient.