physiological; physical
Refers to biological or bodily functions and processes, often in medical or scientific contexts.
生理的な反応として、汗が出る。
Sweating is a physiological response.
睡眠は生理的に必要なものだ。
Sleep is a physical necessity.
visceral; instinctive; gut-level
Describes a deep, almost bodily reaction or feeling that is not based on logic; often used for strong dislikes or aversions.
彼の態度が生理的に嫌だ。
I have a visceral dislike for his attitude.
あの食べ物は生理的に受け付けない。
I instinctively can't stomach that food.
I have a gut-level aversion to insects.
I just can't stand him on a gut level.
An increased heart rate under stress is a physiological reaction.
Appetite and the need for sleep are examples of physiological needs.