Dr. Quack is right on about the "feeling worse off than when you started once the high wears off." Normally, things are cool 7-8 hours after meth, but with ice I was still going strong 24hrs later. My friend can attest to that! I don't think I ever stopped talking/pacing.
Once it wore off, however, I felt like I needed to be carried away on a stretcher. Use sparingly! Hope you're all having a great day!