Originally Posted by
gear64
Cycling is no more poor than any single facet of life examined in isolation. Fitness is formed of eating habits, cardio, flexibility and strength training. Consistency is way more significant than which mode you choose for any category, but all categories are necessary for well rounded health.
Good list of important factors affecting fitness. I would add that an individual's genetics, environmental conditions and occupation are also important factors that can/will affect personal fitness.