I think the reason people respond to weights is simply because exercise generally confers benefit but for people who aren’t yet fit cardiovascular exercise is i

I think the reason people respond to weights is simply because exercise generally confers benefit but for people who aren’t yet fit cardiovascular exercise is impossible. Weights allow you to move and be active without overstressing your heart. They are a great gateway to general health. However getting regular exercise running, swimming or rowing isn’t possible for most unfit older people.