What are the best energy sources for cycling races, and should they be primarily based on natural products or commercial supplements, considering the ongoing debate about the effectiveness and safety of energy gels, bars, and drinks, and the potential benefits of whole foods, such as dates, bananas, and honey, in providing sustained energy and reducing digestive issues, while also taking into account the varying nutritional needs and preferences of individual riders, and the impact of different energy sources on performance, recovery, and overall health, and whether the emphasis on commercial supplements is driven by marketing and sponsorship rather than scientific evidence, and if so, what are the implications for riders who rely on these products to fuel their training and competition, and how can riders make informed decisions about their energy sources in the absence of conclusive scientific evidence and conflicting opinions from experts and experienced riders, and what role do factors such as gut health, hydration, and electrolyte balance play in determining the effectiveness of different energy sources, and how can riders optimize their energy intake to achieve their performance goals while minimizing the risk of digestive issues, dehydration, and other negative consequences, and what are the potential long-term health consequences of relying on commercial supplements and energy products, and how can riders balance their energy needs with their overall health and well-being.