It is not physical activity in the job, but stress. Stress is known to cause elevated hormone levels and inflammation, raise blood pressure, along with elevated risk of heart attack and stroke. It is the stress of the job that is the killer. The older you are the less stress you can handle...
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Vote 2020!

Life is like a PB&J sandwich. The older you get, the moldery and crustier you get.

Now, get off my grass!