okay today was tired leg day, mild head wind and rain so was forced to take it easy.
Avg speed down to 14.6 total time down to 1.01
Avg HR 111 maxed at 140.
The last time I did a similar time same journey was 20th May Avg HR 129 Max 159! 14% reduction in avg and 12% reduction in max. TBH Now I have put in % terms its not such a concern and can be assumed as improvement
Regarding "Predicted" max I have seen advice along the line of take yourself to the very limit just prior to greying out, to be honest I wouldn't really want to do that unless it was in controlled (wired up type) supervision, with a powered up defib next to me :-)
46, overweight etc..
Regarding the weights in my 30's my addiction was the Gym, bulked up pretty good but doing squats etc leaves me with 48 hour muscle soreness couldn't imagine getting anywhere near a bike post leg session.
Reckon i am over complicating a very simple thing, just keep cycling as often as I can and maybe ignore all these stats,