Keep in mind that those repair components are eukaryot cells, and they have two built in rules that are important here :\<p>1) any individual cell, once X energy passes through them, they senescence<p>2) from the ovum you grew out of until the last cell alive when you die, only 128 cell divisions happen in that line.<p>That means there is a finite supply of these repair components, these cells, and so there is a limit to how much energy can go through your body before you die.<p>Therefore, you probably want to make sure &quot;peak&quot; effort in any reasonable time interval (e.g. a month, maybe a week) is pretty high, to encourage the machinery to remain well-maintained, but average effort is as low as possible.<p>You should exercise to have a huge amount of effort for maybe 10-15 minutes per month, sprinting for instance, getting your heartrate up to 130+, and keeping it up for a short while, maybe 20-30 minutes, no more. Other than that, you should probably avoid exercise and eat healthy.<p>There are other reasons gym is not a particularly good kind of exercise. It&#x27;s just not very realistic. Running or biking in the real world, aside from being more fun than in a gym, is also a lot better for you. And probably, having a weekly game of basketball is far better than that.