Indoor cycling enthusiasts always stress the importance of a well-ventilated space, but isnt this just a myth perpetuated by the industry to sell more expensive fans and ventilation systems? Ive been doing 4-5 hour indoor rides in a room with minimal ventilation and I havent experienced any issues, so why are so many people obsessed with having a huge fan blowing directly on them? Is it really necessary to have a massive fan or a super-expensive smart trainer with built-in ventilation, or can you get away with a simple, low-cost setup? Whats the real benefit of having a well-ventilated space, and are there any actual studies or data to back up the claim that it improves performance or reduces the risk of overheating? Are we all just being duped by clever marketing and overpriced gear, or is there really something to this ventilation hype?