There are at least 320 identical pairs of bilateral muscles found in the human body, resulting in upwards of 640 skeletal muscles. One of the goals of a proper training regimen is symmetrical muscle growth on both sides of the body.
Muscle growth – properly called hypertrophy – typically refers to an increase in the volume of myofibrils, the long proteins that make up muscle cells. This growth occurs as a biological response to stimuli, such as the intensive anaerobic exercise engaged in by powerlifters, bodybuilders, and other physique or strength athletes.
Working out with weights actually damages muscle fibers, and afterwards, the body starts to repair that damage.
It is important to keep in mind that the muscle repair that turns into muscle growth does not happen during the workout – it occurs during periods of rest, for up to 48 hours following a workout. Real growth happens when the rate of repair happens faster than the damage. Since muscles get stronger and more resistant to damage the more they are exercised, the biggest gains are usually seen among beginners.
To gain weight (muscle or fat) you need to eat slightly more calories than you burn. You need to gain weight healthily without overeating or getting fat. So it is important to get an integrated training and nutrition plan. The muscle building process is fueled by two things: structured, progressive strength training and a balanced, protein-rich diet.The key really is to not only incorporate foods you personally enjoy but also foods that are simple and easy to make, as that’s exactly what will enable you to stick with it in the long run.