When it comes to Physical Recovery Speed, it's impossible not to mention that boosting the Constitution Attribute is a purer improvement compared to simply devouring Heavenly Materials and Earthly Treasures that increase the Stamina limit.
After all, the Constitution Attribute not only increases the Stamina limit but also enhances the Physical Recovery Speed, and additionally boosts defensive power, Life Value Limit, and various Abnormal State Resistances. However, as always, it's a pity that the Attribute values have a limit and cannot be increased indefinitely, otherwise, there would be no need for anything else.
Moreover, it's also worth mentioning that Zhang Yanhang discovered a hidden effect while enhancing the Constitution Attribute. During his previous clearance of the Fourth Tier Transmission Channel, he had nearly drained half of his stamina, but after adding points, his stamina seemed to be fully restored, uncovering a seemingly useless hidden effect.