Heres How Long a Cannabis High Really Lasts, According to Science

If you ask 50 different people how long the effects of cannabis last, youre likely to get 50 different answers. Interestingly, regular users of cannabis can build up a tolerance, and perform better at cognitive tasks than occasional users after consuming the same amount. “We found that impairment is much more predictable in occasional cannabis users than regular cannabis users. The findings suggest that most driving-related skills could return within five hours after inhaling cannabis, although this time may vary. More research will need to be conducted into these time intervals for regular users, in order to better characterize the effects of THC across the board.