What are some effective strategies for mitigating the risks associated with cycling in high temperatures, particularly in terms of heat exhaustion and dehydration? Are there specific hydration and electrolyte replenishment protocols that cyclists can follow to ensure theyre adequately prepared for intense rides in hot weather? Additionally, what role do factors like clothing, helmet choice, and ride scheduling play in reducing the risk of heat-related illnesses? Are there any specific safety measures or precautions that cyclists can take to protect themselves from the dangers of heat stroke or exhaustion, and are there any warning signs or symptoms that riders should be aware of to avoid pushing themselves too far?