Hey guys I've been dieting down for the past 6 weeks in preparation for a cycle (which I've already posted up). Yesterday I started clen for the first time ever at 40mcg and haven't felt myself. I feel light headed and I can't think straight. I kept the dose this morning again at 40mcg and I'm not sure what to do at this point. Should I stop? Or is this normal? Should I give it a few days?