There are many workout routines to build muscle that countless fitness enthusiasts swear by which can help them gain muscle mass quickly. These muscle building exercises target specific muscle groups so that they can concentrate on the areas that they want to work on in order to achieve the results they desire. These including getting six pack abs, toning their biceps and triceps, quadriceps etc. Today, the technology for achieving results have improved by leaps and bounds since the time of Arnold Schwarzeneggar. We no longer have to train like bodybuilding professionals and spend countless hours in the gym. By doing the right exercises diligently and in proper form, even a skinny person can become as hunky as a lean, mean bodybuilding machine. At the same time, watching what one consumes, ie his/her food and nutrition intake, plays a big part in how fast or slow he/she builds muscle. The right muscle building diet is essential if you are serious about bulking up. Once you begin to eat right, then start to hit the gym, or even workout at home. In between your workout routines to build muscle, be sure to have at least one day of rest. This rest is needed for muscle growth. If you really must workout everyday, then at least alternate the muscle groups you are working on, so that there's time for recovery. A really effective method is to do interval training, ie doing one particular exercise for a specific time/number of reps, resting for 15 to 20 seconds, then quickly moving on to another exercise. There should be at least 5 different types of exercises in each set. And ideally, the entire set should be repeated 2 to 3 times. And there can be 2 to 3 minutes of rest between sets. Why such a training method works because firstly, it engages different muscle groups within a complete set. Secondly, by doing it in quick, fixed intervals, it engages the cardiovascular system and increases the heart rate. More often than not, when doing it right, you can feel the panting sometimes even more than when you are running! It's akin to sprinting. When your heart rate goes up, it increases fat burn while engaging your muscles. And the best part is, as your muscles grow, your overall metabolism goes up! This means you can get ripped, build muscle mass while you lose fat!