Use Ginseng pills to reduce your pulmonary fatigue.
The "Concentrated Ginseng" reduces pulmonary fatigue by 15. The only way to reduce exhaustion in game are: sitting and waiting some time while fatigue decreases or eating ginseng (which already exists in the game and decrease by 2).
Now you can make your own Concentrated Ginseng Pills
Make 2 Concentrated Ginseng using -> 1 Ginseng root + 1 Mortar and Pestle (keep on you) + 2 empty watter bottle.
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