Is your resting heart rate jacked up today? Are you too sore from your last workout to walk? Did you only sleep a few hours the last night? Skipped breakfast and lunch? Congrats, you just earned yourself a rest day. In other words - go home. You aren't going to get anything but an increased risk of injury by training in any one of these conditions.
Develop your strength training routine. The exercises you perform will depend on your goals for your body and your stage in the training process. It's generally suggested, though, that you stick to the same major compound movements that most bodybuilders use, making this the cornerstone of your strength training. Later you can incorporate isolation exercises and machines into your routine, but right now you should be focused on leaning up and gaining muscle, doing the following exercises:

Is your resting heart rate jacked up today? Are you too sore from your last workout to walk? Did you only sleep a few hours the last night? Skipped breakfast and lunch? Congrats, you just earned yourself a rest day. In other words - go home. You aren't going to get anything but an increased risk of injury by training in any one of these conditions.

Once you feel comfortably balanced, contract your quadriceps and gluteal muscles and lower your body slowly. When you reach the point where your upper legs are just below parallel to the floor, push back up to the top without “locking out” and repeat the movement. Make sure to keep your abdominal muscles tight to protect your lower back, and keep your head up and your eyes fixed ahead as you perform this exercise.
Multiply your body-weight in pounds by 10 to get the minimum number of calories you need each day, advises champion female bodybuilder Jamie Eason. You then need to add 300 to this if you have a sedentary lifestyle, 500 if you're moderately active or 800 if you're highly active. Aim to get your calories from nutrient-dense foods such as lean meat and fish, low-fat dairy products, beans, fruits, vegetables, whole-grains, nuts and seeds. You may need to play around with your calorie intake slightly until you find the perfect balance.
For Arnold, building a big chest started with training for strength since he competed as a powerlifter early in his career. With a foundation of strength, Arnold discovered that gains in size came easier. Consider an offseason powerlifting cycle to help boost all your numbers before shifting back into bodybuilding-style training. For the record, Arnold once benched 225 pounds for 60 reps!
I recommend a cyclical approach to bulking and cutting to optimize anabolic hormones and minimize unwanted fat accumulation. This could be 16 weeks of above-maintenance intake for lean mass gains, followed by 16 weeks below-maintenance intake for fat loss. Of course, feel free to experiment with what works best for you. When done correctly, this approach will yield considerable lean mass gains while you stay pretty darn lean.
For the triceps exercise, I recommend skull crushers. I recommend doing these with an EZ curl bar (same reason, it’s much more comfortable on the wrists/elbows than a straight bar) or with dumbbells (palms facing each other). These can be done on a flat or decline bench. Either is just fine. And again, if preferred, any similar triceps isolation exercise would be perfectly suitable in its place.
You’re only a week into the program, yet you’ll begin to train different bodyparts on different days with a two-day training split (meaning the entire body is trained over the course of two days, rather than one as in the first week). You’ll train a total of four days this week; the split includes two upper-body days (Monday and Thursday) and two lower-body days (Tuesday and Friday), and each bodypart is trained twice. Wednesday, Saturday and Sunday will be your recovery days.
Order of exercises: Design your plan so that large muscle groups are worked before smaller groups. The theory is that if you fatigue a smaller muscle group first, then the larger group won't work as hard as it can. For example, do bent-over-rows before biceps curls. Biceps work in both exercises, but since the larger and stronger back muscles are used in the rows, they wouldn't get a maximal workout if the biceps are fatigued. Another way to say it is that the biceps become the weakest link in the chain if you work them first.

Creatine is a time tested product important for energy and volumizing—this means it can cause the muscles to swell in size. Many current products revolve around this concept. There are many different types of creatine out there, they all, of course, claim to be the best. I like the original creatine monohydrate by itself, this needs to be mixed with a sugary drink, I use Gatorade.

Reverse crunch: Lie flat on the floor with your lower back pressed to the ground. Put your hands beside your head or extend them out flat to your sides—whatever feels most comfortable. Crossing your feet at the ankles, lift your feet off the ground to the point where your knees create a 90-degree angle. Once in this position, press your lower back on the floor as you contract your abdominal muscles. Your hips will slightly rotate, and your legs will reach toward the ceiling with each contraction. Exhale as you contract, and inhale as you return to the starting position.
After session 12, consider whether you need to increase the weight for any particular exercise. If you can comfortably do more than the RM of 12 exercises, increase the weight by a modest amount, say two pounds or a kilogram for isolation exercise muscles such as triceps and biceps, and 5 pounds or 2.5.kilograms for compound and large muscle group exercises like squats and deadlifts. When using dumbbells, this would apply to each one. Don’t increase the number of sets beyond 3 at this time.
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.
Major variants: incline ~ (more emphasis on the upper pectorals), decline ~ (more emphasis on the lower pectorals), narrow grip ~ (more emphasis on the triceps), push-up (face down using the body weight), neck press (with the bar over the neck, to isolate the pectorals), vertical dips (using parallel dip bars) or horizontal dips (using two benches with arms on the near bench and feet on the far bench, and dropping the buttocks to the floor and pushing back up.)

Don't worry, we're still talking snail's pace weight gain. Aim for one pound per week of lean muscle mass gains, though you may initially gain faster if you started out extremely lean or glycogen depleted. Start by adding 500 calories to your current daily intake, and maintain that intake until you plateau. If or when this happens, add another 250-500 calories and repeat. 

A more effective strategy is to cause the body to make less cholesterol by lowering your total fat intake. This strategy is much more useful because when you eat less saturated fat, your body doesn’t have to make as much bile to emulsify the consumed fat. Bile is 50 percent cholesterol, and it shows up in the blood with the fat you eat. If you eat less fat, you don’t need as much bile and your total body pool of cholesterol drops.
The exercises listed in Week 1 are a collection of basic moves that, while also used by advanced lifters, we feel are suitable for the beginner as well. Notice we’re not starting you off with only machine exercises; a handful of free-weight movements are present right off the bat. Reason being, these are the exercises you need to master for long-term gains in muscular size and strength, so you may as well start learning them now. Carefully read all exercise descriptions before attempting them yourself.
Not every biceps movement was done for 6-8 reps. Arnold identified certain exercises that he called "definition-building movements," which he performed with relatively lighter weights for sets of 8-12 reps. Here, his focus was on squeezing and contracting the muscle, and holding the peak contraction for a long count. Concentration curls, preacher curls, and alternating dumbbell curls were among his favorites.
After a tough sweat, it's important to rehydrate your body: "Drink lots of water and thank your body for what it was just able to accomplish," says Davis. A balanced post-workout snack is also a good idea. Go for one with carbs refuel your glycogen stores (one of your body's main energy sources) and about 10 to 20 grams of protein to help build and repair your muscles. "Don’t overcomplicate it," says Davis. If you're lifting and weight loss is one of your goals, though, it's still important to keep calories in mind—a post-workout snack shouldn't be more than 150 to 200 calories. Here's a guide to how many calories you should be eating for weight loss.
The motor proteins actin and myosin generate the forces exerted by contracting muscles. Current recommendations suggest that bodybuilders should consume 25–30% of protein per total calorie intake to further their goal of maintaining and improving their body composition.[30] This is a widely debated topic, with many arguing that 1 gram of protein per pound of body weight per day is ideal, some suggesting that less is sufficient, while others recommending 1.5, 2, or more.[31] It is believed that protein needs to be consumed frequently throughout the day, especially during/after a workout, and before sleep.[32] There is also some debate concerning the best type of protein to take. Chicken, turkey, beef, pork, fish, eggs and dairy foods are high in protein, as are some nuts, seeds, beans, and lentils. Casein or whey are often used to supplement the diet with additional protein. Whey protein is the type of protein contained in many popular brands of protein supplements and is preferred by many bodybuilders because of its high Biological Value (BV) and quick absorption rates. Whey protein also has a bigger effect than casein on insulin levels, triggering about double the amount of insulin release.[33] That effect is somewhat overcome by combining casein and whey. Bodybuilders are usually thought to require protein with a higher BV than that of soy, which is additionally avoided due to its claimed estrogenic properties. Still, some nutrition experts believe that soy, flax seeds and many other plants that contain the weak estrogen-like compounds or phytoestrogens, can be used beneficially, as phytoestrogens compete with estrogens for receptor sites in the male body and can block its actions. This can also include some inhibition of pituitary functions while stimulating the P450 system (the system that eliminates hormones, drugs and metabolic waste product from the body) in the liver to more actively process and excrete excess estrogen.[34][35] Cortisol decreases amino acid uptake by muscle, and inhibits protein synthesis.[36]

Precision nutrition for exercise can be complex and that’s why exercise physiologists and sports nutritionists are of great value to sporting teams and athletes. Even though keen amateurs and weekend warriors don’t have to worry too much about the split second in a race or the inch of bicep in a bodybuilding competition like the pros do, we can still eat well for our activity by following the basics of sports nutrition. If you need help sorting it all out, consult a doctor or dietitian who has experience working with athletes.

Lindsay Cappotelli ensures she's consistently making progress by simply tracking her workouts online or in a training journal. "I like to log the exercises I performed, the weight lifted, the reps done, and the rest I've taken between sets, so I always know where I stand," she explains. "Since muscles growth is a constant challenge, I'll mix up my workouts by adding more weight, decreasing the rest between sets, or adding an additional rep or two."
Your lifting form is more important that how much you can lift or how many reps you can do. If you are not lifting with the right form, you are not only just inviting injury, but also hampering progress and possibly gains as well. Advanced body builder will use tricks like partial reps to build up more pump in their muscles. If you are a beginner, you don’t need to. Learn to walk before you learn to fly.
Nothing good comes from crash diets. Keep in mind, anytime you restrict calories for more than a day or two, whether through diet, exercise, or both, your metabolism actually slows down to some extent. The effect is more noticeable with long-term diets or drastic calorie reduction. This explains why so many people who follow crash diets end up gaining every ounce—or more—back.
Training intensely is the key to stimulating muscle growth but don’t mistake volume for intensity. All too often, people trying to achieve a higher level of intensity in their training make the mistake of assuming that increasing volume and duration are effective methods of boosting training intensity. Let me make this perfectly clear. Volume and frequency have absolutely nothing to do with intensity! High volume training sessions can actually be counter-productive. So how do you effectively increase intensity? A. By progressively increasing the amount of weight that you use. B. By progressively decreasing the amount of time it takes you to perform a particular amount of work. (For example, I have made some of my best muscle gains from workouts that lasted no longer than 30 minutes.) C. By working your muscles at the capacity of nothing less than 100% on every set.