Actually the thc will enter the blood stream through the blood vessels in your skin! just for example if you smoke cigerettes and play with a piece of copper say a penny for awhile then you have a smoke ,the smoke taste really sweet .....one time I was harvesting and got the resin all over my fingers then my nose kept getting itchy so I would scratch my nose more and more lol,before I knew it,I got up off the chair to go plug in the kettle and I noticed I was really stoned more like a body stone!...it was weird! and to behonest I always get dragged out and tired when i harvest lol....then again trimming 40 plants would beat ya out anyways.