I am 62 and one of those lucky sportsmen of that age who has survived a heart attack.The thought of wet and windy rides has not inspired me this winter, plus dangerous to my health, so I have cut down Audax and become a fair weather ride for now.
I am going to Italy to ride in the mountains for a week in the sunshine, also doing Tour of Cambridgeshire, Velothon Wales and Velo South, plus charity rides, sportives, club rides, even one of those Wiggle France daytrips. Not completely given up on Audax, I will do a handful of Eastern region rides to keep ticking over.
That way I take the pressure off for a while, and will come back more enthusiastic in the next season, maybe PBP becomes a reality, it does not matter, just got to enjoy time on the bike and stay healthy.