
09/13/2025
Just wanted to elaborate about this story I posted earlier:
This screenshot shows my results from my Oura ring after a run on Thursday. I’m trying to keep my heart rate between 150-155 throughout the run. Ideally, I’d be around 152, so I may keep my speed under 5.6 on Tuesday to adjust a little and see if that keeps my HR a little lower next time. Now for some explanation…
I’ve been running longer distances at steady speeds for the past couple of months in an effort to lower my body fat. There’s something called an anaerobic threshold, which is the point during exercise when the body's primary energy system shifts from aerobic (with oxygen) to anaerobic (without oxygen) metabolism. It's the highest intensity you can sustain for an extended period without a significant buildup of lactate in your blood. This threshold is a key indicator of endurance performance and not crossing it while running for an extended period of time (beyond 45 minutes for most) can lead to maximizing fat burning efforts. However, it ultimately raises my metabolism for the rest of the day - so I also have to be aware and not skimp on my protein or calorie intake.
By doing this, my hope is to lose fat and retain (on off days I lift) and potentially build muscle. Which actually requires being at a caloric surplus. Thus far, I’ve been able to lose weight by eating more calories and protein while running and lifting on offsetting days.
I’m hopeful that the weight loss has been primarily fat and will confirm that next month when I rescan my body and will post both composition analyses with comparative results/discussion.
Nothing like experimenting on oneself! I watched a show called The Knick about ten years ago that is my inspiration for doing so.