The word chastity has a bad name. It suggests cold beds, disapproval and a life without touch. That is not what the tradition means by it.
Here chastity means one thing: the creative energy is not spent. A couple practicing page 40 is chaste. A single person practicing page 41 is chaste. A person who never touches anyone but lives on fantasy is not.
That last point surprises people. The books teach that chastity begins in the imagination, long before the body. The energy follows the picture. A fantasy replayed is energy spent in the mind, and what the mind spends, the body feels later.
So the practical work is with the eyes and with pictures. You see someone attractive. That is natural, and nothing to fight. But the next moment matters. Does the gaze linger and undress? Does a scene begin to play? That second moment is where the energy goes, and where it can be kept.
This is not about avoiding beauty. Beauty can be loved openly, the way you love a sunset, without wanting to own it. Lust looks in order to take. Love looks and lets be.
Watching the eyes for one day is one of the most revealing practices in this book. Many people are surprised by how much of their attention goes this way.