How does the human body lack oxygen?

It may be caused by below factors: ● Hypoxic environment ● Poor posture such as hunchback and chest ● Respiratory diseases such as asthma ● Obstruction of oxygen transport in the human body ● coronary heart disease ● Atherosclerosis ● Cerebrovascular disease ● Excessive consumption: people who use their brains too much, people after strenuous exercise.


It may be caused by below factors:
● Hypoxic environment
● Poor posture such as hunchback and chest
● Respiratory diseases such as asthma
● Obstruction of oxygen transport in the human body
● coronary heart disease
● Atherosclerosis
● Cerebrovascular disease
● Excessive consumption: people who use their brains too much, people after strenuous exercise.