Natalie emphasizes the importance of abstaining from intercourse during specific periods around egg retrieval to minimize infection risks and complications like ovarian hyperstimulation syndrome. She explains that while many believe natural methods are superior, the success of IVF largely depends on the number of eggs retrieved and the patient's age. Additionally, she highlights the financial motivations behind certain treatment protocols, cautioning that minimal stimulation may not always be in the best interest of patients seeking fertility solutions.