I agree with pyschocat.....I would be worried about what my toddler was "thinking" during this period and his safety (walking in front of a car or whatever) and caffeine has no such effects. Not that I think ganja would make the heart rate or BP too low....but both ARE affected by marijuana. An increased heart rate and blood pressure due to 1/2 cup caffeine (or soda for that matter....which kids drink by the tons) would have no more physcial effect on a child than a hard workout on the playground.

It's nice to think that ganja is "harmless", but the truth it is IS a drug.....just like any other drug and should be used with safety rather than with the idea thats perfectly harmless for EVERYONE.