well dont smoke anything until you feal the effect of eating..... I dunno why just dont smoke until the crackers kick in. But when crackers start to kick in for me... The first sign I nottice is that I pay attention to sounds such as the fan moving for some reason and start to feal sorta silly... and I can really tell when they kick in when I watch some one walk out of the room and it just looks so funny lol... and also I can really tell when I start to feal heavier....