If it's just for fitness, you can start practicing with some simple movements;

If it's for fighting, it's more difficult. Because from the age of 40, regardless of physical fitness, strength, sensitivity will be greatly reduced. Moreover, the ligament is too old to be pulled apart, and it is easy to break if the force is too strong.

It is suggested that forty-year-old beginners should focus on personal practice and practice confrontation after laying a solid foundation.