I'm a slow runner and working to improve my times. A lot of people talk about 80/20 in running where 80% ought to be at an aerobic heartrate zone. According to my garmin I have to run around 11 mins per mile to achieve this low of a heartrate zone, some days as slow as 11:30 to keep my heartrate in the 140s.
Now something to mention is I do drink 1 coffee most mornings, perscribed stimulants and vape nicotine. All of these things raise your heartrate, especially during physical activity. I know these aren't healthy and I'm working on it. Already cut out the white stuff, quick drinking, quit smoking butts and started jogging every day. Baby steps here.
Point is all of these things raise your heartrate, especially during excercise. My resting heartrate is a pretty healthy 55bpm but even light activity will knock it up to the 80s or 90s. A light jog will bring me to the 140-150 range as mentioned earlier. A comfortable 9-10 minute pace run will get my heartrate into the170 usually within a couple miles. A hard 7-8 minute pace tempo run will bring me to around mid 180s and an all out 800m will bring me to around 200. (all this measured by garmin watch)
My goal is to run 5km under 20 minutes. Right now I would be lucky to run one at 7:30 pace and my best effort was around 8 minute pace (about six/eight weeks ago). Should I reall be running most of my miles at 11 minute paces? this feels ridiculous, even though it doesn't physically hurt the way some people talk about on here. It's just feels a similar effort level to walking.
I do most of my easy runs around 10:15 pace right now to strike a balance between being easy and not being useless. Many days I will do 1-2 miles at 11 pace or whatever to keep my heartrate in the zone, then do a mile or two in the 7's to get more comfortable running that speed, then another mile or two gradually slowing doing from this pace back to the 11 minute pace as a cooldown.
It feels like I'm improving using this kind of approach and never too tired to run, just wondering what is the most efficient way of training as a beginner.