During that recovery period you may experience the emotional opposite of the effect of the drug. A good example of this is amphetamines. However, rest after amphetamine use is essential to allow the brain to recover from the peculiar alteration produced by amphetamines. Regular use of amphetamines often produces paranoia. Where marijuana is concerned, one can notice that under the influence of the drug virtually everyting one sees is interesting.
Ordinary things take on extraordinary qualities.
Cocaine is a very useful drug for enhancing a special experience. Special care must be used, however, to avoid any regular use. Like amphetamines, the brain needs to rest after a cocaine experience. They are wonderful when you are in pain. They are as addictive as tobacco, however, and should be used sparingly.