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First it starts with a 5K. Next thing you know your child has moved onto a 10K, then a half marathon, then even a full marathon. Spending hours every week feeding this disgusting habit. And by disgusting I mean nipple chafing and foot blisters.
Why do people run? In our last episode we talked about the health benefits of running, which I’m pretty certain a lot of people probably run for that reason, maybe even exclusively, or at least get started for health reasons — but MAYBE lots of people also run because… well… they get high.
What do we conclude?
It seems pretty clear that you can get high from running. Now, whether this is relatively mild changes in pain perception, or slightly elevated mood following running, or getting outright blitzed mid-run seems to vary between runners, but it’s good to know at least the mild form is repeatable! We still don’t really know the mechanisms–there might be endorphins, but that’s a hard thing to be sure of. Endocannabinoids seem like a pretty likely candidate too, but the case is far from settled! The best evidence we have suggests that a 30 minute run at 70-80% of your maximum heart rate (not too fast!) seems to make most runners feel good.
Smoking pot recreationally before running doesn’t seem to have the negative effects you might think it does–since it’s a bronchodilator. But since it also increases heart rate, it doesn’t seem like it would be helpful to smoke up pre race (maybe just for a training run). Whether or not pot is a performance enhancing drug is still being sorted out, but there’s no blaring sign that you *shouldn’t* occasionally smoke up before running if it’s legal in your jurisdiction. Just take ‘er easy.
Studies mentioned in this episode:
Getting the runner’s high is pretty common
Old definition of the runner’s high as a “transcendental” experience
New definition of runner’s high
The runner’s high as a placebo response
People who think the runner’s high is a myth
Blood plasma levels of endorphins increase after exercise
PET study showing possible endorphins in the brain
Naloxone doesn’t block the mood effects of therunner’s high
Naloxone does seem to block some of the pain relieving effects
Review suggests the endorphin hypothesis has little evidence
A review of the endocannabinoid system
First evidence of endocannabinoid release in runners
Review of exercise and the endocannabinoid system
Optimal running dose for endocannabinoid release
Running in adolescence reduces cannabinoid receptors in rats
Knocking out cannabinoid receptors decreases wheel running in mice
Blocking cannabinoid receptors decreases running in mice
Exercise addition and endocannabinoids
Judgement impairment following cannabis use
Cannabis use doesn’t always decrease reaction time
Old Canadian studies on pot use and cycling
Cannabis decreases grip strength
Review of cardiovascular effects of cannabis
Cannabis use increases heart rate
Potential use of cannabis as an anti inflammatory drug
Review of effects of cannabis on exercise performance
Cannabis smoking doesn’t decrease lung function
Cannabis smoking doesn’t seem to have negative lung effects
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