Acharya Prashant explains that women like burly, big, and muscular men because they are likely to have higher levels of testosterone, which is necessary to build muscles. He notes that it is difficult to build muscle after the age of 50 or 60 because testosterone levels drop. Big muscles built with testosterone are a good sign of a man's ability to reproduce. Therefore, women are trained by Nature (Prakriti) to have a soft corner, or a hard corner, for men with big biceps. Women may think it is the biceps that attract them, but they do not understand that Nature is using them to find someone with a high sperm count. The speaker states that this is what is called love: a girl looking for a boy with a high sperm count. Similarly, what a man calls beautiful in a woman—her curvature, hips, and breasts—are all features that make her conducive to bearing a child. Exactly that which qualifies her to bear a child is taken as beautiful by men. So, all a man is looking for is someone who is quite fertile. Nature has distorted the entire definition of beauty in a man's eyes, making him see beauty in what is conducive to childbirth. This process happens unconsciously, below the radar. When a man says he has fallen in love, it is a biological drive. The speaker suggests that the song lyric "I'm in love with the shape of you" is a more honest admission, as the shape tells the man that the woman will be a good mother to his child. The desire for commitment arises from this biological drive. It is not just about wanting to have sex, but wanting an uninterrupted and guaranteed supply of sex. This is what is called commitment, loyalty, or other such terms. It is the assurance that one will find their partner on the bed every night. Nature's objective is not for a person to have sex with only one partner; its objective is for one to become pregnant and for the species to be furthered, regardless of who the father is. The child must come. This, the speaker explains, is why adultery is so common, as humans are not designed to restrict themselves to one person. Nature has trained people to appease their hunger and quench their thirst, regardless of the source.