How quickly does cycling change your body?

I'm curious to know, how swiftly does cycling alter one's physique? Does it depend on the intensity and duration of rides, or are there other variables at play? Are there noticeable changes in muscle tone, weight, and endurance after embarking on a cycling routine? Furthermore, does cycling contribute to overall fitness in ways beyond physical transformation, such as improving cardiovascular health and boosting mood? I'm eager to hear your insights on this topic, as a professional in the realm of cryptocurrency and finance who also harbors a keen interest in the benefits of cycling for the body.