I haven't studied this problem carefully either. Let's talk about what we often hear in the gym, which is not necessarily correct and is for reference only.

1 Not too wide, just enough to cover those vertebrae.

Some people like hard ones, others like soft ones that have been used for a long time. I prefer Microsoft, of course, just a little harder, softer and better than the new one.

Don't rely too much on the belt, especially when you just start practicing or don't weigh much. There is a saying that it is best not to use it if it does not exceed 100 kg. I don't know if this number is meaningful, but it is always greater than 100. ...

Compared with other protective devices, the technical content of the belt is not too high. Taobao's 100 yuan is definitely not as good as the imported hundreds, but the gap is not that big, and it can still be used. Of course, money is dispensable, and there must be a good reason.