Not sure @Anonymous1502 is in Nottingham...but London / Edinburgh? Not that it really mattersThank you for the expert view.
But @justinmg , for a 20 year old female with an average resting HR, in the afternoon sitting at her laptop, is 106bpm 'elevated'?
NB Three hours after her cycle, which was 55km and hilly (Nottingham hilly) - doubt much lactate generated/lingering, with at least the last 5km flattish.
What answer do you reckon her doctor will offer? How about "Yes, it'll be few beats higher than 'normal' after you've had a ride. Take care to drink during your next ride and have a drink of water as soon as you get home."
Despite request, the OP has yet to share her resting HR which I think would at least quantify the 'elevation'.
I'm kind of lucky because all of my commute is up and down rolling Devon hills so it's a couple of minutes of hard climbing followed by a little downhill rest. There are no flat sections of any great length where I can just pedal along at a nice relaxed pace. I've commuted much further in the past but my current commute is the hardest I've ever done and has brought with it the greatest health benefits.And, yes, 4000 miles a year is a good distance and as you've described, has helped your general fitness and condition massively. Further improvement will probably depend on you deliberately incorporating as many short intervals as possible during your commute, commensurate with road safety.
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