To come to a conclusive determination about any relationship between cannabis use and mental illness, researchers would need to conduct a study many times larger than any that has taken place.
With no music, video games, or the great outdoors to distract you while you're stoned, your mind will wander into itself and start to turn up some exciting things.
"We're not suggesting jumping into the middle of a Crossfit workout. Those folks are intense (and yes, some of us are crossfitters.) But we are proposing that getting your body moving more than a walk from the couch to the car is essential."