Ready to take one for science?

Germany is looking for 25,000 experienced pot smokers to partake in a study on cannabis sequences for adult consumers. And yes, it involves free weed.

A research group called the Research Initiative on Cannabis Consumption is seeking government approval to analyze the effects of medical marijuana on psychologically healthy adult consumers.

There are, of course, a few stipulations: You need to be at least 18 years old. You must have experience smoking marijuana. You can’t have a high risk of addiction or psychiatric problems. And, of course, you need to get your butt to Berlin.

Each month, participants in the study will receive 30 grams of cannabis normally reserved for medical patients. Germany legalized medicinal marijuana earlier this year.

It should come as no shock that 2,000 Berliners have already signed up to participate in the study: 6.1% of German adults reported using cannabis at least once in 2015, more than any other illegal substance.

“In Germany several million people regularly get high on cannabis,” chief executive of the project Marko Dörre wrote in a statement, according to The Local. “It is time that science becomes more engaged with recreational use.”