Activating thc with heat is A DAMN LIE. When extracting the thc with oil or alcohol, heat increases the amount of thc that can be extracted per unit of solvent and the rate of extraction. When people say they get higher from eating weed after it has been heated, they are, but that is because it breaks down the cell walls of the weed and this speeds up the digestion of the thc. The best way to take thc orally is to extract it into oil or alcohol first. Keeping it in this solution will also aid in digestion.