Weight loss, heart rate

My diet seems to be back on track again. It stalled rather over the summer with both making visits and being visited but with luck, from being obese at the start of last year, I am now back on course to possibly even not being medically overweight by my birthday this year. How arbitrary these boundaries are in relating to meaningful medical outcomes I don't know.

I have been intrigued by the effect of diet or exercise on my heart rate. Back in Ohio the doctor tested me for reasons that my resting pulse might be so high: hyperthyroidism, etc. This year it's been in the 50s.