a term often used amongst drug people. baseline essentially means sober. when you've reached baseline, you may still feel a little weird, but your feet are now firmly on the ground. at this point, it is usually safe to drive or operate heavy machinery. if you did acid, it's about 8-12 hours before you reach baseline. 4-6 for MDMA. and about 6-8 for shrooms. these durations are all averages and one's experience may last significantly longer or shorter. YMMV.