Why is physically exerting yourself to the point of exhaustion at the gym good for you but various jobs involving manual labor seem to cause permanent damage in the long term?
In: Biology
Exercise and the body work in this way. The body needs some stress (exercise) to prompt it to adapt, grow and get stronger. So Stress + Rest = Growth. This is good for you, even if in the stress stage of things your muscles for example, are being broken down. During the rest bit they get a chance to build back up stronger than they were before. If it’s just Stress + Stress the body never gets a chance during the downtime to adapt and get stronger. So it just breaks down, and down, and down and this can cause permanent damage.
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