because it harms your body and makes you high which can makes you harm others by a mistake...therefore in order to avoid all this mess its illegal in most of the world...
Inhaling chemicals can kill you and have many other bad, permanent effects on your body. As for marijuana, it should be avoided because you can be arrested for getting caught with it.
Ecstasy is a hallucinogen, and so is marijuana, so, smoking weed while on Ecstasy will enhance the high. Alcohol should be avoided, as it will kill the Ecstasy high.
All should be avoided except talking.
parral error should be avoided cause it can cause a disaster
Hazards
what yoga exercise should be avoided if prone to retinal decatchment?
Any plastic shutters should be avoided in favor of wood ones.
Several practices that should be avoided in the workplace:Unsafe practicesViolation of company policyBullyingIllegal activityFishing from the company pierHorseplaySleeping
Macadamia nuts and walnuts are toxic to cats and should be avoided in their diet.
Foods that are crunchy should be avoided to minimize the risk of breaking the appliance.
Actually, they souldn't be avoided. They need new homes.
Become addicted to marijuana yourself.