He can claim to have a special physique

Ah yes beause there arent people in america beaten down by society like this. having to work hard at multiple jobs just to live especially with all the high prices compared to other countries.

To be fair, even if he recieved pill poisoning. I assume it would pop up as a negative effect that he could just (-) away

Ah yes because America doesn't have a bullying issue which has led to a few school shootings?

Also for some medications or maybe even all, if taken too often for an extended period of time. Your body could grow to be immune to its effects. Antibiotics is one such examples. Doctors dont like people really taking them unless told to do so, because of complications that may arise from carelessly using them randomly and often.

You can thinking of it both ways. The more you take the less effective it will be on your body. Think of it like regular medicine such as advil which is used for things such as inflammation. Taking it once will help, sometimes doctors main recommend taking it for a period of time, but not too long either because it may eventually harm you. Your body will need time to recover and expell the chemicals from the medicine. in this case, you can think of his ability as giving the positive effect if the medication such as reducing inflammation, but he isn't actually ingesting more than one advil. That is why there is no pill poisoning or other negative effects.

Internal: Actually its probably something like chi or chakra

External: training the body Internal: training your organs Connate: I assume training the soul

Beginning* Also just because you're having a headache doesn't mean you can't recognize your surroundings. This is more about reading comprehensIon rather than the fault of the author. They wrote it just fine.