This is some funny shit... But I'll reply with what I know. Marijuana is actually a great expectorant, and it is common knowledge amongst European Cross-Country skiiers that a lot of teams get blazed a few hours before competing because it clears out their lungs. Now coughing during activity is definitely not good, which is the reason why they do it before hand.
Here's the thing about your buddies: I know this is how it is for a lot of guys who blaze up, so I don't think this is off base. If your buddies get really baked, do you think they're going to want to start running miles or is the sofa going to start looking real attractive to them?
It doesn't matter if you agree or disagree
... As long as I don't bore you and I spark a moment of thought, my goal is achieved
Queng leon queng tigre ecu tacacut, queca pa? - Pampangan Mandarigma Motto