There are about 650 muscles in the human body. Muscles are contractile tissues that allow the
performance of different gestures and in particular to animate certain parts of the body:

  • In bodybuilding, we are mainly interested in skeletal muscles.
  • They are controlled directly by the brain, which sends them a nervous impulse, unlike
    the heart or the stomach, which are driven by an involuntary control.
  • Skeletal muscles represent on average 40% of the total body mass. An 80 kg man
    therefore has about 32 kg of muscles at the base. Weight training can increase this
    ratio by adding 10 or 20 kg for the most assiduous practitioners.
    A muscle is composed of 75% water, 20% protein, 4% fat, carbohydrates, calcium,
    magnesium and potassium and also 0.7% myoglobin (which causes voluntary anaerobic
    contraction). Muscular strengthening aims to go beyond the simple motor function of muscles
    by provoking voluntary contractions in order to progressively make them fatter. Genetically
    defined, the composition of muscles changes with strength training.

The Qualities of Muscles

Medicine advises two activities to keep your muscles in perfect health. The first is rest. After
an activity that is strenuous to the functioning of the muscles, it is advisable to rest to relax them.                                  A muscle that has participated in several movements deserves to be rested to regain its
strength and respond better afterward. It is therefore advisable to relax sometimes after a
particularly strenuous sporting activity.

As a second means of maintaining healthy muscles, sport plays an important role. Walking,
running, swimming and other sports activities are recommended to keep your muscles in
good condition. These activities make it easier for the muscles to function so that they can
become accustomed to certain movements. This is why regular physical activity is
recommended. Some people take up weight training altogether. This exercise helps develop
muscles, especially skeletal muscles, to make them bigger. This, in turn, increases muscle
strength and muscle mass. It is also important to know what to eat when you want to build
muscle so that it can respond to more loads and weights to support.
In addition, food also contributes to the well-being of the muscles. You need to eat well to
sustain muscles that need good nutrients for their development.