Why is hot spring tourism popular?

Most hot springs are rich in chemicals that are beneficial to human body. For example, calcium carbonate in hot springs plays a considerable role in improving physical fitness and restoring physical strength; Hot springs are rich in potassium, calcium, radon and other ingredients, which have a certain effect on regulating heart and brain diseases and treating diabetes, gout, neuralgia and arthritis.

So good, of course everyone wants to go.