A group of brave individuals were subjected to a rigorous experiment, enduring 15-minute sessions of low THC exposure every week for over a month. This exposure, consisting of a mere 0.5% of weed smoke, was administered through a pump cleverly concealed inside a vehicle. But the trials did not end there. After a month-long break from any form of exposure, the participants were summoned once again to repeat the same exposure, but this time with a higher dose of THC-infused cannabis smoke. And as if that wasn’t enough, the researchers also collected urine and hair samples from the participants for further analysis.