Are you more one of those hard people of cardio who spend one hour or running in the tape or sliding in the elliptical one? He wishes to increase his cardiovascular and muscular power, the resistance and to reduce the fat without jeopardizing the muscular weave to show his better physicist? He has been asking itself, why not to change my physicist? If this one you are, then you must begin to train more intelligent. I have been seeing this people without rest during years, like conejillos of Indians, without stopping of pedalear and taking a walk in its hopes to create that thin, muscular physicist and in form about which they dream. I feel it for being frank, but never it is going to work! Definitively I am not on the verge of saying that it is easy, is not for the weak ones of heart. From my first days like an athlete, always I have been running if it were in the ice or the Earth and never I understood really why somebody would make cycles or races during hours and hours with the hope to improve the yield or the appearance. Like an athlete who is enabled to work a high intensities. So you are thinking that all this cardio that there am been doing is not healthful or beneficial? Yes, until certain point he is beneficial for your health in the sense that you are training to your cardiac muscle. Nevertheless, the question is, really to improve the health of your heart and it forces to his maximum potential? Secondly, when long duration is realised, of moderate intensity of exercise, you can put yourself in a catabolic state in which you will begin to lose muscular mass. Thus it is – the muscle hard gained will begin to degrade itself in its search to become thin! Formation HIIT has a series of healthful benefits for the heart (similar to the ordinary cardio) besides the reduction of the time of formation.