Whether you are trying to lose weight or get that muscle tone to show or just get a healthier heart, cardio is very important. The general recommendation is at least 150 minutes per week. But of course, this could be more depending on your goals. Males tend to lift weights a lot, and sometimes forget that cardio is just as important. You could run, swim, use the elliptical, do HIIT exercises, or whatever. But make sure you get some in today!