ecstatichamster
Member
- Joined
- Nov 21, 2015
- Messages
- 10,501
CO2 builds up at the same rate whether inhaling and holding or exhaling and holding. Why would exhaling and holding cause more CO2 buildup than inhaling and holding? The difference is that exhaling and holding is training you to adapt to low oxygen levels whereas inhaling and holding is not.
Inhaling and holding uses the inhaled oxygen and you want to displace oxygen with CO2.
It doesn’t work well at all. In fact it can cause health problems to inhale and hold your breath if you are already having health issues.