Smoking weed makes you lazy, study says

It’s long been suspected that smoking pot makes you lazy and now science has proved it. 

Researchers from the University of British Columbia, Canada, gave the chemical tetrahydrocannabinol (THC), the main brain-affecting ingredient in cannabis, to laboratory rats. 

Investigators trained 29 rats to participate in a behavioral experiment where the rodents had to choose whether they wanted an easy or difficult challenge to earn sugary treats. 

“Perhaps unsurprisingly, we found that when we gave THC to these rats, they basically became cognitively lazy,” said Mason Silveira, the study’s lead author. “What’s interesting, however, is that their ability to do the difficult challenge was unaffected by THC. The rats could still do the task — they just didn’t want to.”

At the beginning rats chose between two levers to signal whether they wanted an easy or hard challenge. Choosing the easy challenge resulted in a light turning on for one second, which the rats could

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