Creatine is only taken up by its transporter, and changes in the activity level of this transporter are wholly causative of changes in creatine uptake. The transporter is regulated by mostly cytosolic factors as well as some external factors that affect creatine transport activity, [143] including extracellular creatine.[140] Agents affecting creatine transport are further divided into positive regulators (those that increase activity of the transporter) and negative regulators (those that suppress activity).
Perform bent over rows to work your back. Stand with your feet shoulder-width apart, about 6 to 10 inches (15–25 cm) behind the barbell or two dumbbells. Bend slightly at the knees but keep your shins vertical. Bend forward at the waist with your spine and head straight. Lift the weight with an overhand grip up to your lower chest or upper abdomen. Lower slowly until your arms are nearly extended, without touching the ground. 3 x 8.[5]
In addition to the HIIT sessions, it’s always a good idea to go for a 30–60-minute walk as many days per week as you can. I recommend getting a minimum of 10,000 steps every day. Use a phone app to track them. If you’re into jogging, swimming, hiking, or some other form of long-duration, fairly low-intensity cardio, that is fine to do as well, and as often as you like.
The first thing you need is a weight training program that signals the muscle building process to begin. Research has shown that a well designed program will generate this “signal” via a combination of progressive tension overload (as in, getting stronger over time), metabolic stress (as in, fatiguing the muscle and getting “the pump”), and muscular damage (as in, actual damage to the muscle tissue itself).
Men appear to have higher active creatine-kinase systems, and racial differences favor black people over hispanic people over white people in terms of the activity of the creatine-kinase system. This system is more variable in men, independent of supplementation. Exercise may increase the activity of the creatine-kinase system independent of supplementation.
In regard to liver fat buildup (steatosis), which is normally associated with reduced availability of S-adenosyl methionine[495][496] and a suppression in expression of genes involved in fatty acid oxidation (PPARα and CPT1), creatine supplementation at 1% of the rat diet alongside a diet that induces fatty liver is able to fully prevent (and nonsignificantly reduce relative to the control given standard diets) the aforementioned changes and the state of steatosis, as well as changes in serum biomarkers (glucose and insulin) that accompany steatosis.[125] 
ZMA: This supplement is a combination of zinc, magnesium and vitamin B-6. Some research shows that this combination can help raise testosterone levels. In the trial, subjects took a daily dose of ZMA (which included 30 mg zinc monomethionine, 450 mg magnesium aspartate and 10.5 mg vitamin B-6) at night during 7 weeks. Other hormones like IGF also increased, while the stress hormone, cortisol was reduced, creating an overall more favorable hormone profile. Not surprisingly, muscle performance also improved. (n) This paper is surrounding in controversy, however, because one of the scientists involved also holds the trademark for ZMA, and the research is company-funded.
When Katula started his research on whether weight training would improve quality of life for seniors, he realized that many had never even picked up a dumbbell. “They first had to learn how to use these big intimidating weights and machines,” he says. He recalls the story of one woman who protested that she couldn’t do the leg press machine. Finally, Katula persuaded her to sit in the machine and set the weight at 50 pounds. “I couldn’t believe how fast she whipped out 10 reps,” he says, “When she got out of that machine, she was two inches taller just from increased pride.”
Three amino acids (glycine, arginine and methionine) and three enzymes (L-arginine:glycine amidinotransferase, guanidinoacetate methyltransferase and methionine adenosyltransferase) are required for creatine synthesis. The impact creatine synthesis has on glycine metabolism in adults is low, however the demand is more appreciable on the metabolism of arginine and methionine [11].

There’s no need to go overboard on creatine intake, though, in search of crazy muscle growth: “The maximum amount of creatine that you can hold depends on the amount of muscle mass you have,” explains Bates. “So if you have more muscle, then your body can store more creatine. In general, the muscle can hold about 2 to 3 g of creatine per kilogram of muscle mass. So the amount of creatine you use will depend on the amount of muscle mass you have.” (7)
Bodybuilding became more popular in the 1950s and 1960s with the emergence of strength and gymnastics champions, and the simultaneous popularization of bodybuilding magazines, training principles, nutrition for bulking up and cutting down, the use of protein and other food supplements, and the opportunity to enter physique contests. The number of bodybuilding organizations grew, and most notably the International Federation of Bodybuilders (IFBB) was founded in 1946 by Canadian brothers Joe and Ben Weider. Other bodybuilding organizations included the Amateur Athletic Union (AAU), National Amateur Bodybuilding Association (NABBA), and the World Bodybuilding Guild (WBBG). Consequently, the male-dominated contests grew both in number and in size. Besides the many "Mr. XXX" (insert town, city, state, or region) championships, the most prestigious titles[according to whom?] were Mr. America, Mr. World, Mr. Universe, Mr. Galaxy, and ultimately Mr. Olympia, which was started in 1965 by the IFBB and is now considered the most important bodybuilding competition in the world.

Studies of so-called "smart drugs" have also been taken out of context. Some "smart" nutrients, available over the counter, are marketed as a way to "increase mental focus and concentration during training." The problem is that the studies they're based upon involved either animals or people with brain pathology. In normal people the effects of smart drugs remain unproven, except anecdotally.
It’s true—your genes can play a role when it comes to building muscle. In general, there are two types of muscle fibers: Type I, which are slow twitch, and Type II, which are fast twitch. Depending on which you have more of, you may have an easier or harder time gaining muscle. “Fast twitch muscle fibers are two times as thick as slow twitch muscle fibers, lending to the overall thickness of the muscle without any activity,” explains Lovitt. “Those people with a genetic predisposition of a high percentage of these fibers can increase muscle size very easily while the people with a higher percentage of slow twitch muscle fibers have to work really hard to put on mass.” It’s the reason why a world-class sprinter genetically has more fast twitch muscle fibers than a world-class marathoner—it comes down to what we’re born with. 

Creatine is a natural source of energy for muscle contraction. The body produces creatine in the liver, kidneys, and pancreas. People can also get creatine by eating meat or fish. (Vegetarians may have lower amounts of creatine in their bodies.) Most of the creatine in the body is stored in skeletal muscle and used during physical activity. The rest is used in the heart, brain, and other tissues.

Creatine is known to occur in highly concetrated levels in chicken photoreceptors, relative to other parts of the eye (10-15mM[466]) alongside high levels of creatine kinase.[466] The creatine transporter in human eyes also seems to be concentrated in the photoreceptors,[468] which are known to be susceptible to hypoxic cellular death[471][472] which, for humans, usually means retinal detachment.[473]
Daily, Heath usually eats five to six pounds of protein-rich meats — filet mignon, chicken, turkey, salmon and tilapia, mostly. He consumes up to 75 grams of carbohydrates in the form of grits or oatmeal, white or brown rice, and various types of potatoes, including sweet potatoes. Mornings might bring 16 ounces of scrambled egg whites. He tries to drink two gallons of water a day. His off-season weight usually reaches 275 pounds or more, still chiseled.
Dymatize Nutrition maximizes the benefits of protein in ISO-100 through its use of hydrolyzed 100% whey protein isolate. Designed to increase the absorption of protein, this fast-acting protein provides 25 grams of protein and 5.5 grams of BCAAs per serving, with no gluten or lactose. With a formula that aids in the instantaneous delivery of effective and advanced protein forms straight to the muscle, ISO-100 is able to repair and build muscle faster, resulting in the ability to reach fitness goals sooner rather than later. Keep Reading »
Under most circumstances, sports drinks do not offer a physiological benefit over water during weight training.[18] However, high-intensity exercise for a continuous duration of at least one hour may require the replenishment of electrolytes which a sports drink may provide.[19] Some may maintain that energy drinks, such as Red Bull that contain caffeine, improve performance in weight training and other physical exercise, but in fact, these energy drinks can cause dehydration, tremors, heat stroke, and heart attack when consumed in excess.[20] 'Sports drinks' that contain simple carbohydrates & water do not cause ill effects, but are most likely unnecessary for the average trainee. More recently, people have been taking pre-workout before working out to increase performance. The main ingredients in these pre-workouts are: beta-alanine, creatine, BCAAs (branched chain amino acids) and caffeine.[21]

^ Burd, Nicholas A.; Yang, Yifan; Moore, Daniel R.; Tang, Jason E.; Tarnopolsky, Mark A.; Phillips, Stuart M. (2012). "Greater stimulation of myofibrillar protein synthesis with ingestion of whey protein isolate v. Micellar casein at rest and after resistance exercise in elderly men". British Journal of Nutrition. 108 (6): 958–62. doi:10.1017/S0007114511006271. PMID 22289570.
Recommended dose: The fastest way to increase muscle creatine stores is to follow the loading method of 20 grams per day for 5-7 days, followed by the standard maintenance dose of 5 grams per day. However, a lower dose of 5 grams for 28 days will also increase creatine stores without causing the 2-4 pound weight gain typically seen with a loading protocol.

After all, you’ve probably seen the countless workouts, diets, supplements, programs, products and people claiming that super fast muscle growth is possible. You’ve probably also seen the click-bait headlines (“How To Build 20lbs Of Muscle In Just 6 Weeks!”) and the unbelievable transformations of supposedly “natural” people (bodybuilders, celebrities, athletes, fitness gurus on social media, etc.) that clearly prove it can happen faster than this.