Why is it a positive thing when the LV (left ventricle) hypertrophies with exercise?

Your heart muscle cells may get larger in response to some factor that causes the left ventricle to work harder, such as high blood pressure or a heart condition. As the left ventricle's workload increases, the muscle tissue in the chamber wall thickens.

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Being demisexual means you are on the asexual-scale. This doesn't mean you are asexual, however, it does mean that you usually only find sexual attraction when you are comfortable with the person. This means things such as one-night-stands wouldn't interest you. You can still be bi/pan/gay/straight if you are demisexual. Evan Edinger did a really good video a while ago on this as well. Here's the link. https://youtu.be/I41cBuTMhDo Hope this helps!!