Because the upper traps get some degree of stimulation during many shoulder exercises, Arnold trained them with delts. His main upper-trap exercise was the shrug, though he noted that maximizing the size of this muscle required a number of other movements, including power pulls, cleans, and upright rows. Because the range of motion in a shrug is fairly short, Arnold recommended backing off on the weight in favor of being able to fully shrug your shoulders as high as possible.
The squat is performed by squatting down with a weight held across the upper back under neck and standing up straight again. This is a compound exercise that also involves the glutes (buttocks) and, to a lesser extent, the hamstrings, calves, and the lower back. Lifting belts are sometimes used to help support the lower back. The freeweight squat is one of 'The Big Three' powerlifting exercises, along with the deadlift and the bench press.[2]

Since putting this workout routine out there back in 2010, I’ve gotten tons of feedback from literally thousands of people. Many just wanted to tell me (and show me) how well it has worked for them (which is awesome). Others, however, still had additional questions and wanted more details. Not just about this workout, but about building muscle in general.

Since putting this workout routine out there back in 2010, I’ve gotten tons of feedback from literally thousands of people. Many just wanted to tell me (and show me) how well it has worked for them (which is awesome). Others, however, still had additional questions and wanted more details. Not just about this workout, but about building muscle in general.

Perform 2 sets of each exercise for 10-12 reps and rest 1 minute in between sets. Move up to 3 sets after 4 weeks. At 2 sets per exercise the routine lasts 45 minutes if you rest 1 minute in between sets. At 3 sets it lasts 60 minutes. Do cardio on the days off (20-30 minutes) and also do abs (4 sets of Leg Raises and swiss ball crunches for 15-40 reps).

In the presence of good nutrition, a novel training stimulus forces the muscle fibers to rebuild themselves and grow stronger and thicker than before. But the impact of the stimulus begins to fade over time as the body adapts, so you have to continue increasing the overload in some way or you simply won't make any further adaptations. You can add more weight, do more reps, or decrease your rest intervals to continue making further gains.
Consume 10 to 20 grams of high-quality protein within 30 to 60 minutes of a weights session. Research has shown that an intake of 6 to 12 grams of essential amino acids, which is equivalent to 10 to 20 grams of a complete protein, promotes enhanced muscle recovery and rebuilding after a workout. One gram per kilogram body weight (about 0.5 grams/pound) of carbohydrate taken with the protein may assist this anabolic boost. Some trainers call this a protein "shooter." Options that meet these requirements include 17 fluid ounces of flavored low-fat milk; 1 cup fruit salad with 7 ounces of flavored yogurt; or a large glass of nonfat milk with two slices of bread and honey or jam (no butter).
You will start with 1 set of 12 repetitions for each of 9 exercises for the first week. At workout session 8, you should have progressed to 3 sets of 12 repetitions for each exercise. The weight you choose to start with will be sufficient to perform a set of 12 repetitions to failure with good form, which means that the twelfth repetition is pretty much the most you can do without resting. This is called 12RM (repetition maximum).

If you’re constantly depriving yourself of the foods you enjoy most, there’s a much greater chance that you’ll simply become discouraged and quit. Figure out what you need in terms of overall daily calories and macronutrients (the level of detail that you apply here is dependent on your individual goals and situation), and then allocate a small percentage of that to allow for the foods you crave most.

They simply pushed my limits. When you see someone do something better than you, it naturally pushes you to do better. Even today, I hate to see anyone lift more than me. I always want to beat them! Healthy competition is good, so surround yourself with successful people in your sport or profession and it'll force you to excel. There's always something new to learn and some new way to improve, so find someone and make him your training partner.
To combat steroid use and in the hopes of becoming a member of the IOC, the IFBB introduced doping tests for both steroids and other banned substances. Although doping tests occurred, the majority of professional bodybuilders still used anabolic steroids for competition. During the 1970s, the use of anabolic steroids was openly discussed, partly due to the fact they were legal.[9] In the Anabolic Steroid Control Act of 1990, U.S. Congress placed anabolic steroids into Schedule III of the Controlled Substances Act (CSA). In Canada, steroids are listed under Schedule IV of the Controlled Drugs and Substances Act, enacted by the federal Parliament in 1996.[10]
A proper warm-up is an important part of an effective strength workout. Start by foam rolling your muscles to wake 'em up. "Foam rolling loosens up tight muscles so that they work the way they're designed to," says Davis. A dynamic warm-up is another important part of your pre-workout routine, it preps your muscles for the work they're about to do and helps increase your range of motion. Increasing your range of motion allows you to go deeper into those squats and fully extend those bicep curls, which means more muscle recruitment and better results. "These two combined reduce your risk of injury and allow you to push harder during your workout," says Davis. Get started with this five-minute warm-up.
Now I don't know if Branch is avid in his flexibility routines, but perhaps if he had been just a bit more flexible, maybe his arm could have caught him in a different way, preventing an injury. Flexibility is all about being able to move your body in a variety of different ways to compensate for the many different stimuli that can possibly cause harm to the system as a whole.

In step 3, cut back your energy intake by the 15 percent you added previously. Because you're now not the lean guy you once were, you may have to eventually eat slightly more to maintain that extra muscle, but that comes later. Bodybuilders do this to prepare themselves for competition: They put on muscle and some fat by eating, then they strip off the fat, leaving the muscle to show through. It’s called "cutting." 

Perform three weight-training sessions per week, hitting your whole body each time. Base your routine on compound exercises such as squats, lunges and deadlifts. These burn the most calories, hit more muscles and give the best bang for your buck, claims Rachel Cosgrove, strength coach and co-founder of Results Fitness in California. If you're not sure of any exercise techniques, ask a trainer at your gym for assistance.
Attract sponsors to go pro. The more competitions you win and the more your physique starts to speak for itself, you'll need to start attracting sponsors, essentially going pro. This means that you'll be able to make money to train full time, without having to worry (at least as much) about doing other things to fund your bodybuilding. This is the dream that every bodybuilder works toward, and it'll only be available to a select few, with the genetics and the effort to make their bodies into Olympia-level physiques. Keep working toward this.