Male or female, you look, feel and act old because of all the muscle you’ve lost: the less active you are the less calories you burn, the more muscle you lose, the more fat you gain, and the less active you become: it’s a vicious cycle, a Catch 22.
Your metabolism resides within your muscle mass: the less muscle you have, the slower your metabolism. The cure for that? Increase your muscle mass.
Your immune system also resides within your muscle mass. You’ll stave off illnesses more often and recover quicker from those you acquire if you increase your muscle mass.
Is building muscle easy? Nope.
Is it fast? Not really.
Is it enjoyable? Not at first.
Is it worth the effort?