Whenever I go out riding the first 30 mins or so is hellish. I am always wheezing and my legs are always aching. Then after that I start to feel better and get into a decent rythm. This is particularly noticeable on group rides, where it is always a struggle to keep up at the start, then I do OK later on.
Can anything be done to help this? Warm up? Interval training? Or is it just my physiology? Or my psychology? I should add that the rides are always rather 'brisk'.

