Gabba Gabba Hey Ho let's

[TheEd]

Hi Anba, in the 'old' days before heart rate monitors etc, we would work on the following rule of thumb

1 minute per km slower than current 10k race pace .. so if 40 minute 10k you would run easy runs at 5 minutes per km up to 1hr to 75 minutes

75 minutes to 90 minutes plus was around 90 seconds slower than current 10k race pace

so if breaking this down to pulse, we found that 30 minutes to 1hr pulse to be kept below or around 140 bpm

for longer runs keep pulse below 140 in the beginning and don't allow it above 150 bpm overall, obviously the terrain running on etc plays a part

so, you could consider for the next week to run according to pace from the 1 minute slower than 10k race and record what your pulse is at that pace, though, you have a very low resting pulse so the feedback should be interesting

all the best TheEd