On a cellular level, how does exercise make us healthy or improve our health?
In: Biology
Another reason is that when your cells replicate and DNA is copied, the DNA inevitably gets shorter. For this reason there is junk DNA at the ends of the strands called telomeres which act as a padding. It’s okay if this DNA gets shorter since it doesn’t code for anything important. Over the course of your life, the replication will make these telomeres so short that further replication will start affecting the DNA that codes for necessary proteins. This has many negative health effects, and cancer is one of them. Scientists have reported that people that exercise regularly have telomeres that look 20 years younger than those who lead a sedentary lifestyle. Exercising truly makes you live longer since it extends the amount of times your DNA can replicate.
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