Many men who are on the path of building a better body ignore cardio or look at a cardio as purely assistance on a cut. Huge mistake. Cardio training is training of cardio vascular system. Goes perfectly into longevity mentioned above. Just check main causes of male mortality in your country and see which position cardio-vascular diseases take. Might as well hit that treadmill in order to enjoy your perfectly sculptured body for longer, gentlemen.
When lifting it is essential to focus your mind completely on the muscle group you are attempting to work on. This makes sure that you are actually using the target muscle to lift the weight rather than accessory muscles or even momentum. This skill will develop with time, and as you progress in making that mind to muscle connection, your workouts will become much more productive and efficient.