Muscles.
We have over 600 of them.
They make up between 1/3 and 1/2 of our body weight,
and connective tissue,
they bind us, lift us up, help us move.
And whether bodybuilding is your job or not,
muscles need your constant attention because the way you treat them every day
determines whether they will wither or grow.
Say you are standing in front of the door, ready to open it.
Your brain and muscles are perfectly ready to help you reach this goal.
First, your brain sends a signal to motor neurons inside your arm.
When they received this message, they fired,
which makes the muscles contract and relax?
Which pulls the bones to your arm and produces the required movement.
The bigger the challenge, the more the brain signal grows,
and additional car units combine to help you accomplish your task.
But what if the door is made of solid metal?
At this point, the muscles of your arm alone
will not be able to create enough tension to pull it open,
so your brain attracts more muscles for help.
You plant your feet, strengthen your stomach, and strengthen your back,
to produce enough power to unlock it.
Your nervous system has recently used the resources you already have,
other muscles, to meet the need.
When all this happened, your muscle fibers undergo some form of cellular change.
As you expose them to depression, they suffer minor injuries,
which, in this context, is a good thing.
In response, damaged cells release flammable molecules called cytokines,
Which makes the immune system repair the damage.
This is where the magic of muscle building takes place.
Severe muscle damage, that's when your body will need to repair itself.
In the resulting cycle of injury and repair, it eventually makes the muscles bigger and stronger
As they become accustomed to the increasingly demanding demands.
Since our bodies are already accustomed to doing most of our daily activities, those usually do not produce enough stress to promote new tissue growth.
Thus, building new muscles, a process called hypertrophy,
our cells need exposure to higher activity than they are used to.
In fact, if you do not constantly expose your muscles to certain contradictions,
they will shrink,
a process known as muscular atrophy.
Conversely, exposing muscles to a high degree of tension,
especially as the muscles grow,
also called eccentric contraction,
produces effective conditions for new growth.
However, the muscles rely on more than just work to grow.
Without proper nutrition, hormones, and rest,
your body will never be able to repair damaged muscle fibers.
Proteins in our diet maintain muscle mass by providing layers to build new tissue
In the form of amino acids.
Adequate protein intake, as well as naturally occurring hormones,
such as insulin-like growth factor and testosterone,
to help remove the body from the condition where the tissue is repaired and grown.
This important repair process takes place, especially when we are resting,
especially at night while sleeping.
Gender and age affect this correction,
that's why young men have extra testosterone
to lift the leg in a muscle building game.
Genetic factors also play a role in a person's ability to grow body tissues.
Some people have a strong immune response to muscle damage,
and better repair and replace damaged muscle fibers,
increasing their ability to build muscle.
The body responds to the demands it places on it.
When you tear your muscles, eat well, relax and repeat,
you will create conditions to make your muscles as big and strong as possible.
The same is true of muscles as well as health:
Meaningful growth requires challenge and stress.
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