OK, I've been concerned about wasting meth for some time. This is where my thinking is:
1. Vaporise only what you know you can inhale and hold in fully
2. Start counting twenty-five when you start inhaling
3. Exhale as deeply and as powerfully as possible then, and take slow deep breaths to get some oxygen back afterwards
This is giving me better value for money, but the deep exhalation is crucial, otherwise I get short breathing and lung pain
1. Vaporise only what you know you can inhale and hold in fully
2. Start counting twenty-five when you start inhaling
3. Exhale as deeply and as powerfully as possible then, and take slow deep breaths to get some oxygen back afterwards
This is giving me better value for money, but the deep exhalation is crucial, otherwise I get short breathing and lung pain