years ago, i was told that your proper clen dose would raise your bodytemp .5-.75 degrees F.
any higher dose won't increase fat burn, only side effects and attenuation to the drug. once this dose is determined, doubling the dose won't cause any more fever, unlike DNP. it is this thermogenisis that causes the fatburn, so keep the dose as low as possible.
have no data, but sounds plausible