I can handle my stuff at least...

baba to digeh ki hasti...
today in biochem class we learned about bio-transformation, basically how the body deals with drugs. Each person genetically will express different proteins (enzymes) in different proportions, or slightly differently. Therefore your body can handle drugs better than anotherr, so this has nothing to do with 'you' handling anything, just merely your bodies biochemical ability to get rid of the drug due to enzymes, anti-oxidants, liver/kidney function etc. but sooner or later it will take its toll, because you are constantly activating certain gene expression sites in your DNA (in different organs) and changing your biochemical and hormonal balance.
Eftekhar nakon hade aghal.