I have noticed the peaks a few times but it was only when I was taking a lot of weed at once. Like the first time I took a lung I went into the weirdest high ever, I was sitting in a room but I forgot the room was there apart from the bit I was looking at. Then I smoked a few joints and although I was really high I was falling....not quickly....just not on the same high....like it went to a normal high.