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Changes While Running: Know what Happens to Your Body During a Run!

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Whenever we log in to our social media account, we find numerous updates of friends and relatives training for and running marathons. Realizing the magical changes while running and its importance for a healthy workforce, corporate powerhouses around the world have started promoting marathons in a big way.

Running together is not only beneficial for health but also a platform to enhance camaraderie. Some people start running to burn some calories to fit in their tight clothes while others start running because of either curiosity to see the changes while running or simply a passion for running.

A sedentary lifestyle has brought upon a curse on our health and heart, which needs to be tackled with at the earliest available opportunity. After sitting for hours, our body too needs a change – a healthy change.

Running or jogging is that great change which makes our heart healthy and brings about positive metamorphoses in our body.

And most importantly,

it tones our body without burning a deep hole in our pocket.

Your body goes through a transformation while you run and you will be able to relate to the changes while running!

Make sure to warm yourself up before the run. To know more check the warm up routine to have a perfect run!

Step by Step Analogy of how the Body Changes while Running

In the First few Seconds

As soon as your start running, the body temperature starts increasing with the higher burning rate of carbs, fats, and proteins stored in the body.

Consequently, the body starts demanding more and more energy to burn bodily resources and this is the first step towards how the body changes while running.

Your body starts using adenosine triphosphate (ATP) – a molecule that stores energy in the muscles.

Pre-running warm-ups

These energy molecules are derived from burning of carbs and fats. As you continue running, an atom of phosphate detaches from ATP, releasing necessary heat energy required for muscles to work and converting ATP to ADP (adenosine diphosphate).

In the First 90 Seconds

As you continue to run, glycogen stored in your body as carbs or fats is broken down to pyruvic acid.

After a series of reactions, pyruvic acid gets converted to carbon dioxide, water, and 36 molecules of ATP.

Each ATP stored in the muscles is capable of providing energy for up to 30 kilojoules when broken to ADP, which is sufficient for you to last few minutes.

Changes While Running: Know what Happens to Your Body During a Run!

So after every few minutes, your body will start recycling ADP back into ATP by burning more glycogen stored in your body. The process of converting ATP to ADP and back leads to the release of lactic acid.

This in the world of workout is known as “feel the burn,” wherein a signal is sent to the brain that the body is under physical stress.

In the Next few Minutes

After a few minutes, you start breathing heavily, leading to higher uptake of oxygen and thus converting more and more glycogen to ATPs to suffice for the enhanced energy requirement of the body.

Your heart starts beating faster, and the left ventricle starts pumping more and more oxygenated blood to the muscle under stress.

Changes While Running

As you hit the pace, your glutes, legs, and core help you keep your body upright; control your gait and extend your hip joints so your feet can push the ground beneath. Your body, thus, changes while running and this is how the body begins to lose calories by burning more and more carbs and fat.

The burning of glycogen increases the body temperature, and to maintain optimal body temperature, your body starts sweating.

Within 10 Minutes

If you are in good shape or are physically active, then your body efficiently uses oxygen and burns calories and fat. At this point, you start feeling strong.

On the other hand, if you are out of shape and physically inactive , then it starts getting tough. Your lungs hit the maximum capacity, ATP cannot keep up with the demand and your body is flooded with lactic acid. Accumulation of lactic acid beyond a certain level makes your muscles send a signal to the brain that it is under stress and to stop the activity immediately. You start feeling tired, your pace slows down and you find it hard to run.

Don't Give Up

But do not give up .

You can boost your endurance with a systematic plan that gradually increases your stamina and endurance.

You should also pay keen attention to the diet as pre-run and post-run diets matter tremendously when it comes to your performance on the track or the road. Do not run after your meals as heavy stomach impedes the blood flow to muscles.

After your run

Whew! It’s finally over . As you slow down, the energy demand falls down and the breathing rate comes back to normal.


Your brain is triggered with the mood-elevating hormone dopamine. You start feeling good and energetic. After your run, you should consume food rich in carbs and water to make up for the losses incurred while running. After a long run, drink water but make sure it is at room temperature or slightly cooled.

To make sure that you are well hydrated during and after the run, check out these tips to keep yourself hydrated for a good run!

Do some stretching exercises to loosen the stiff muscles to avoid cramps when your body is back to its normal temperature.

Beginning to run is simpler than you believe.

Apart from the above-mentioned health benefits, the other changes while running are that you look young and attractive. It makes you self-confident, and with obvious gains in your body and a reducing waistline, you tend to be more disciplined towards your training schedule.

To sum up, “ A good laugh and good run are the two best cures for everything.

So buy a good pair of shoes, get off the couch and run!

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