Some say aura is „a quality or feeling that seems to surround a person or place or to come from them“. Could be a strong energy that I feel, sometimes, if perception is particularly heightened, even see. It’s not as mysterious as it sounds, it’s just being attracted to a vibe. Something that is inviting, feels good, which makes you curious for more. Perhaps there is also a bit of instinct involved. For me, there’s no bodyparts that are of interest in the first sight, it’s the whole person. Nothing to do with muscles. But good if person is having one or two :)