a lot of young men smoke weed, Cannabis, also known as marijuana
Yes, marijuana use is defintely on the rise. My whole ocutry just legalized it, effective in October. 
really, it  can be used by smoking, vaporizing, within food, or as an extract.
I went to a legal weed store in California and you could buy leaves, drinks, chocolate, cigarettes- everything marijuana. 
really, i learnt the effects is within minutes when smoked, and about 30 to 60 minutes when cooked and eaten.