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Cardio is the type of exercises/activities that bring the heart rate/breathing rate up quite a bit. Lifting weights, doing crunches, push-ups, etc. may make your muscles tired, but they don't elevate your heart rate - they simply target a certain muscle/group of muscles. Cardio involves the exercises/activities that I mentioned before, such as jogging (outside or treadmill), stair climbing, cycling (real or spinning type activities). Cardio helps most people slim down. A person who does a ton of abdomen exercises may have a lot of muscle in the stomach area, but it may not be noticed because if you have extra weight that muscle may be covered with a layer of fat (little or lot). Shed the extra weight and it'll become more visable/defined looking. Keep in mind that everyone has a different build though. Some people are just more naturally lean, while others have a heavier build. That has a lot to do with genetics... My son is very lean/wiry built, so it shows quickly when he works out. My brother's son is thicker/heavier built, so he doesn't really show definition. That same kid (17) is an excellent pianist. So while physical fitness is important (in my opinion), focus and build on your personal strengths
Cardio is the type of exercises/activities that bring the heart rate/breathing rate up quite a bit. Lifting weights, doing crunches, push-ups, etc. may make your muscles tired, but they don't elevate your heart rate - they simply target a certain muscle/group of muscles. Cardio involves the exercises/activities that I mentioned before, such as jogging (outside or treadmill), stair climbing, cycling (real or spinning type activities). Cardio helps most people slim down. A person who does a ton of abdomen exercises may have a lot of muscle in the stomach area, but it may not be noticed because if you have extra weight that muscle may be covered with a layer of fat (little or lot). Shed the extra weight and it'll become more visable/defined looking. Keep in mind that everyone has a different build though. Some people are just more naturally lean, while others have a heavier build. That has a lot to do with genetics... My son is very lean/wiry built, so it shows quickly when he works out. My brother's son is thicker/heavier built, so he doesn't really show definition. That same kid (17) is an excellent pianist. So while physical fitness is important (in my opinion), focus and build on your personal strengths
