yep, I remember that video
Can be altered tho
Go for long enough without a nut for instance and women can smell the sperm in your balls. They're like psychic ninjas when it comes to those subtle changes
Lift heavy, eat clean, take supplements, meditate
There's all kinds of things which change how that aura or smell is perceived.
When I do different things, I pay attention to all the little reactions, cues, body language, ioi's etc
You learn a lot when you pay close attention to their psychic antenna. We all have it but women are more naturally dialed in