I’ll turn 45 in December and have 3 years with TR. My resting HR is similar to yours. After burning out in 2020 I took essentially a 2 month off season. I started structured training back up in Oct 2020 and finished my race season the beginning of Oct 2021. I’ve hit all time PRs, hit my highest FTP and had a better than expected race season.
My lowest resting HR was after my 2 month break has slowly increased over the past 12 months. I was definitely in need of a break this October and it’s no surprise my HR is up for the month of Oct 2021.
