Breathing faster means spending more oxygen for breathing itself,

送交者: Amsel 于 2013-11-27, 19:14:01:

回答: 这里有说由 cornbug 于 2013-11-27, 18:48:26:

so the overall efficiency is low, just like a battery with a higher internal resistance.

manufacturing haemoglobin also cost energy (无内容) - pgss (0 bytes) 2013-11-27, 19:51:12 (732965)
The energy used in a deep breath may be roughly the same - cornbug (36 bytes) 2013-11-27, 19:21:28 (732964)