Right on! Our adage was “when attending a cardiac arrest, first measure your own pulse”. It sounds silly, but those 10 seconds force you to be calm during that situation — extremely sound advice.
There is a wonderful answer about drugs and mental illness which this margin is too small to contain. In short — just because someone is stoned, it doesn’t mean they are not mentally ill. This kind of fundamental misunderstanding about mental illness and or drug abuse is responsible for a lot of bad.