Exercising for a longer life
I think it would be fair to say that it is widely accepted that exercising regularly is a vital component of living a healthy life. When we reflect upon how humans used to live it becomes very clear however, that more and more activities that used to require physical labor are being taken over by machines. This is not just referring to labor in terms of manufacturing or industry but also in terms of everyday activities such as spatial navigation -- the vast majority of us use cars, moving sidewalks, elevators and escalators on a daily basis. There are some good reasons for this a lot of the time, such as having to commute long distances or simply due to increasing time constraints, but this is not always the case. In many aspects, such technologies have become embraced too readily and in doing so have made many of us sedentary. Consequently, for the vast majority of us who are not competitive athletes, we must exercise to maintain an active balance.