(or put another way what am I doing wrong!!!)
Having decide that I've probably been over training for my second 10k in 3 weeks time (see other thread) I decided to try using a HRM to make me run at a more sensible rate.
Anyway did the calcs max rate (220 -age) = 168, resting rate =66 therefore working rate =102 (hopefully making sense so far) therefore a slow recovery run at 60% should mean rate of 127> so i strapped on my HRM and jogged as slow as I could 7.5K in 52 minutes (any slower I'd be walking) trouble is HRM was showing between 140 &155, average at end of run was 145, which is about 80% of max ie a tempo run.
Anyone any ideas what I'm doing wrong?