"普通に生活していても胸の筋肉はつかない"
- You can't gain chest muscle living a normal life.
- You won't gain any chest muscles through living a normal lifestyle.
普通に生活していても胸の筋肉はつかないし、普通の人は胸の筋肉はあまりないので、かっこいい。
- You can't gain chest muscle through a normal lifestyle and people normally don't have a lot of chest muscle so I think its cool.
アメリカ合衆国 
