It seems to me, as a curious non-medic, that at the root of heart disease is a state of persistent arousal, which is similar to stress -- high blood pressure, h

It seems to me, as a curious non-medic, that at the root of heart disease is a state of persistent arousal, which is similar to stress -- high blood pressure, high blood sugars and fats, tachycardia, low immune, high inflammation, poor digestion, etc. All arguably useful if you are hunting prey or raiding the next village. But bad for the body in the long run. So I think we ought to ask why in this day and age do we seem to find this biological state desirable -- for example, does it paradoxically enable us, while still alive, to be more productive?