The new ‘runner’s high’: the benefits of mixing cannabis and exercise

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Is cannabis the new ‘runners high’? Eight out of 10 cannabis users (in states where it is legal) say they partake in the drug shortly before or after exercise. Most reported that it motivates them to work out, helps them enjoy exercise more and improves their recovery, according to University of Colorado Boulder research.

The paper, published in the journal Frontiers in Public Health, is among the first to explore the complicated intersection between cannabis and exercise.

Debunking cannabis stereotypes

Angela Bryan, a professor in the Department of Psychology and Neuroscience and the Institute for Cognitive Science, said: “There is a stereotype that cannabis use leads people to be lazy and couch-locked and not physically active, but these data suggest that this is not the case. The evidence is not there yet, but I am also not convinced it is harmful.”

Bryan stresses that she is in no way recommending using cannabis as an adjunct to exercise.

Cannabis is now legal for recreational use in 10 states and medicinal use in dozens more. Yet, little is known about how rising acceptance could impact public health measures like physical activity and obesity.

Some have speculated that increased use could worsen the obesity epidemic by fuelling a sedentary lifestyle. On the other hand, the authors note, the World Anti-Doping Agencyprohibits cannabis use in sporting competitions due to its potential to improve performance.

The new ‘runners high’

Ultrarunner sometimes use cannabis to battle nausea and boredom on long runs. Epidemiological studies show cannabis-users tend to be leaner, less prone to diabetes and have healthier blood sugar levels.

“There are a lot of interesting data points and hypotheses out there but not a lot of them have been tested,” says Bryan.

In a first step toward filling the research gap, she and her colleagues surveyed 600 adult cannabis users in California, Colorado, Nevada, Oregon and Washington, asking – among other questions – if they ever used cannabis within one hour before or four hours after exercise. 82% said yes.

A follow-up question of 345 “co-users” (people who use cannabis with exercise) found they were more likely to use it after than before, but 67% said they did both.

Among those who co-used, 70% said it increased enjoyment of exercise, 78% said it boosted recovery, and 52% said it heightened motivation.

“Given that these are all recognised barriers to exercise, it is possible that cannabis might actually serve as a benefit to exercise engagement,” the authors write.

Only 38% said it boosted performance, and in fact some small previous studies have suggested it may harm it. Notably, those who co-used also got about 43 minutes more exercise per week than those who didn’t.


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