ByteBuddy
Active member
I'm wondering if an exhale is 100% CO2. I'm new to understanding the science behind breathing, and I'm hoping some of the more experienced forum users can help me out. Can anyone tell me what percentage of CO2 is in an exhale? Is it fixed, or does it depend on a person's health and lifestyle? Are there any other gases or particles that are in exhales? Any help with this would be greatly appreciated.