As a relatively novice recreational runner, I have consistently found that if I, say, run half a mile to a mile or even a bit more (or about 5-10mins) and then take a 100m (or about 30-60 sec) walk break, my average 5K training pace is actually almost a minute/mile faster at around 9’30” mins/mile and/or feels easier than if I tried jogging the whole distance without walking (at around 10’30” per mile at roughly the same level of perceived effort). If needed, I *can* also push myself to continuously run a 5K at around 9’30” per mile, just that my heart rate (HR) will be much higher at over 90% of max HR for a majority portion of the run and will feel hard, so I don’t think I should push myself that much every day or even every other day in order to avoid injuries, and because I try to get most of my training mileage in at easy pace as everyone recommends.
For a given level of perceived as well as HR-indicated effort, I feel like a healthy runner should be fastest running continuously as opposed to running with walk breaks. Why am I significantly faster running with walk breaks for the same level of effort? How should I train to overcome whatever is my handicap so that I’m fastest when running continuously (like most experienced runners are)? It feels so idiotic to be faster with walk breaks (for the same level of effort).