What is exactly stamina? What happens when it gets trained? Do your lungs get better and more efficient at pumping air?
In: Biology
I’m not a doctor or trainer or anything, but the way I understand stamina is that it basically comes down to how efficiently your body can use oxygen for an extended amount of time. If you use running as an example, the biggest factor that allows you to run for longer periods of time (think marathon versus a sprint) is how well your lungs can break down oxygen and get it into your blood stream so that your leg muscles can keep working without getting fatigued.
You get “winded” when your body is trying to use oxygen faster than you can take it in, which is what causes people to “lose their breath,” essentially trying to replace that lost oxygen as quickly as possible.
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