Onerous Role.
The duty of a teacher can be extremely challenging. Their role can drain them out physically, mentally, and emotionally at times. Pressure can be really strenuous. With a taxing schedule at class, fetching time for stress buster activities seems like a far sighted question.
Due to unbearable stress and anxieties, some of them lead emotionally imbalanced lifestyles.
In a wider study, it has been researched about teachers facing various health problems, due to their profession. From having to stand all day long in the class and succumbing to knee pain, back aches etc; to avoiding bathroom breaks causing urinary and colon related problems in them; to throat infections/issues due to fluctuating volume levels of lecturing and sometimes screaming in class, and so on.
There are many issues about teacher's profession that only teachers can understand and deal with, but not the non-teachers though.