why do our bodies feel worse when we lounge around all day?
In: Biology
Your body has a circulatory system. The heart, lungs, arteries, veins, and capillaries are like a pump and piping system for your body. Their job is to deliver oxygen and nutrients to all the cells of your body. When this system functions well, your body and all its cells are happy.
When you lay around all day you tend to breath shallow and have a low heart rate and blood pressure. This means your circulatory system isn’t pumping blood around your body super effectively. Oxygen and nutrients aren’t getting into all the nooks and crannies as well as they could be. This stagnation makes you feel lethargic and weak.
You might notice that if you haven’t exercised in awhile and you suddenly go for run you might get all itchy, particularly on your thighs, butt, and torso. This is because the increased activity is forcing blood into capillaries and activating nerves that haven’t been used in some time.
This is also why stretching, massage, and heat is good for recovery and injuries. It increases blood flow to the affected area and helps the healing process.
There are other psychological and physiological reasons but those are more complicated. Overall, your brain and body is happier with exercise and good blood flow.
EDIT: [HERE](https://www.healthline.com/health/fitness/runners-itch#takeaway) is a link talking about reasons for itchiness during exercise.
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