A home gym has introduced gym mat products.
A compact home gym equipped with a half rack, bench, and adjustable dumbbells. You can create a stable floor by laying a gym mat on tatami.
The sinking of the floor depends largely on individual perception, but it cannot be generalized, but if you are concerned about the softness of tatami mats, you may feel more at ease with a 50mm thick gym mat than a 25mm thick one.