I've had the euphoric feeling! Not often but from time to time.... maybe once or twice a season. I don't know what causes it... but it might be a good time to hydrate.

My warm-up time seems to vary greatly. Maybe I am feeling "right" in ten minutes..... other times it may take 8-10 miles. I pay close attention to my body's feed-back and what it is telling me, as far as what my body is in condition or ready for. It is good to push your body.... it is also bad to push too hard or too far too soon. We should all have coach's... I think.

I chatted with an older gentleman (89) once who said he rode 3 miles every morning (mostly on a trainer when not in Florida). He contributed his good health and longevity to his diet and healthy lifestyle. He seemed like a pretty happy old guy. Apparently.... for him... 3 miles was the perfect amount of riding. Set your mileage and your speed based on YOUR body... and what works best for YOU.