I know this girl who started doing Meth about 6 months ago...she started by snorting it until one of her friends showed her how to smoke it. She usually will smoke what she has in about 3 days. During those 3 days she is up almost all night and day maybe getting 2-4 hours of on and off sleep each day. Would this be what they call tweaking? Or would that be only if you did not sleep at all for the 3 days?