How to Build Muscle in a Matter of Weeks

There's a reason people say Rome wasn't built in a day, and the same goes for your body. There's no hard and fast rule behind the speed of muscle growth. Factors like hormones, age, caloric intake and training plan all affect the rate at which muscles develop. But that doesn't mean you can't begin to see results within only a couple of weeks with the right diet and workout routine.

Barbell back squats are a great exercise to integrate into your leg-strengthening routine. (Image: urbazon/E+/GettyImages)

How To Build Muscle in the Gym

In order for muscle to grow, your body has to experience a level of tension it has not encountered in the past. Enter: strength training. There are several components that stimulate hypertrophy or muscle gain. These include muscle tension, muscle damage and metabolic stress, according to the National Academy of Sports Medicine (NASM).

Muscle tension occurs when the exercise or weight adds mechanical tension to the muscle. Muscle damage is the micro-tearing of your muscle fibers, which triggers an inflammatory response. Metabolic stress is the result of the buildup of metabolites like lactic acid. Unlike muscle tension or damage, you can't really see or feel metabolic stress. Over time, your body will adapt to these three stressors, building stronger (and bigger) muscles.

Now that you've got the basic physiology of building muscle down, you need to consider the specifics behind your exercise. Hypertrophy weight training exercises usually involve three to four sets of six to 12 reps, and you'll gradually add more weight to your exercises with each workout session, according to the NASM.

When it comes to exercise frequency, consider your schedule and set a realistic goal. After all, the best workout regimen is one that you can stick to. Typically, you want to strength train about two days per week for optimal health, according to the U.S. Department of Health and Human Services. To make time for the work you need to put in for muscle gain, you may want to spread your strength training over three days per week instead, although more research is needed to determine if three days of strength training results in faster muscle-building than two days, according to a 2016 study published in Sports Medicine.

The types of exercises you complete each day will depend on how often you plan to strength train each week. For instance, if you plan to strength train twice per week, consider devoting one day to a push routine and one day to a pull routine, NASM suggests.

A push routine involves muscles that contract as you push, like your chest, triceps and shoulders. Select a variety of exercises for your push day that target each of these muscle groups. Several examples include: barbell bench press (chest), dumbbell shoulder press (shoulders) and triceps cable extensions (triceps).

On the other hand, a pull routine targets the muscles that contract as you pull, like your back and biceps. Pull exercises can include barbell rows (back) or cable biceps curl (biceps).

Finally, let's not skip leg day! If you're planning to strength train twice per week, include the legs on your pull day, NASM recommends. However, if your schedule allows you to strength train for three days each week, work your legs on the third day. Try exercises like barbell squats, deadlifts and lunges.

How To Build Muscle in the Kitchen

Properly fueling your body is another key component to muscle gain. Hypertrophy is only possible when you combine exercise with a healthy diet, according to the Academy of Nutrition and Dietetics. Extra calories are helpful to spur muscle gain, but that doesn't mean it's pizza and candy for dinner every night! Let's take a look at the three macronutrients (protein, carbs and fat) so that you're fueling properly.

Protein is often the first thing that comes to mind when you're looking to build muscle. According to a July 2017 meta-analysis published in the British Journal of Sports Medicine, dietary protein significantly enhanced muscle gain during strength training. However, that doesn't mean you need to load up on tons of protein supplements. The researchers found that consuming more than 1.6 grams of protein per kilogram of body weight did not yield muscle gain. Aim to consume around 1 to 1.6 grams of protein per kilogram of body weight per day from lean protein sources like chicken or fish.

Carbohydrates are another key element to muscle gain. When you consume carbs, they are partially converted to glycogen, which is then stored in the muscle to fuel your exercise, according to the Academy of Nutrition and Dietetics. As with your protein, your carb sources are crucial and should come from whole, healthy foods like vegetables and whole grains.

The third piece to the puzzle is fat. Roughly 20 to 35 percent of your daily caloric intake should come from healthy fats, according to the Academy of Nutrition and Dietetics. Fat is another source of energy that your body uses to fuel your exercise and, as with carbs, should be sourced from healthy foods. Foods like olive oil, raw nuts and avocados are all excellent sources of healthy fat.

How To Build Muscle in the Bedroom

Your sleep is probably one of the most commonly overlooked components to healthy muscle gain. Sleep deprivation hinders both your exercise quality and your nutritional choices. However, skimping on sleep hurts more than just your mental capacity to work out and eat healthy—it affects your physiology too!

As mentioned above, glucose from carbs gets stored in the muscles as glycogen to fuel your workouts. However, much of this process occurs while you're sleeping, according to the International Sports Sciences Association (ISSA). If you don't get enough sleep, your body isn't able to replenish your muscles with sufficient glycogen.

Another key process that is disrupted with sleep deprivation is the release of human growth hormone (HGH), one of the key compounds that helps your muscles grow, according to the ISSA. When you sleep, your bloodstream fills with HGH, repairing muscle damage and building new muscle fibers.

A few easy measures can help you get the best sleep for building muscle fast. The National Sleep Foundation recommends sticking to a regular sleep schedule, avoiding alcohol and heavy meals before bed and creating a regular bedtime routine that includes powering down electronics.

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