The people who don't respond don't do enough. Salvia is weird-you can smoke and smoke and nothing happens... them whazzam. It is very powerful stuff. My friend lying on a bed watched his legs get up and walk all over the room-fllor, walls and ceilings. You also feel like you're in syrup-gravity feels stronger-it actually feels a lot like being very stoned-like when you haven't had any weed for a few weeks, your resistance has gone, and then you smoke loads.