DXM is very bad for your body and I wouldn't reccommend it. MDMA (ecstacy) is fine to do every now and then, and it really is very fun, but it can fry your brain fast. LSD (acid) is completely safe for your body (you won't OD, you'll never ever find that much LSD), but it definately wears your brain out and you can have a bad trip IF YOU LET IT HAPPEN. I've never had a bad trip and have eaten LSD around 60 times, it's all about keeping a good, strong mindset. I highly reccommend trying acid a few times at least though, it is my drug of choice.