Regarding the question first asked in this topic, I came up with another tip on today's ride.
Keep your shoulders loose.
Sounds odd, but here's what I mean. Yesterday I was under a bit of pressure. Left home at 5:00 am for a 6:30 pm function over 800 kays away. It was -2o when I was near Warwick (went down the New England as rain was forecast for all the Pacific). When it's very cold, I tense up, and the trip down the Hunter Valley makes me very tense with lots of 50 kph hamlets etc etc. My shoulders were in agony.
Today I was relaxed and when I did something a bit challenging on the road I realised how much I tense my arms and shoulders. I consciously chose to relax them every time I felt a bit tense and the difference was huge.
That along with standing on the pegs occasionally you can deal with some of the hazards of cramped body bits.