@Brad_Olwin I always run 2-3 days after races. Only for all-out Marathons, I take two weeks off. My HR is not really influenced by these races. It is not more than the usual ±4 bpms during easy runs at aerobic LT. Of course my legs are tired and the muscular effort feels way higher for the pace but HR is the same for the speed that I run. I would be then not able to run for long time at my LT but due to fatigue. HR is then still in the expected corridor for that pace. Only experienced strong deviations of LT HR at return to sport after stronger infections like COVID and always the first 3 days of winter training camp on the canarien islands. There my body is always completely overwhelmed by the sudden 25°C temperature difference.
SZ though told me so many times, I would be way above or below my threshold even though HR and pace was exactly as expected. During the training camp SZ always told me that my Real-Time effort should be way higher. No way that I could ever run at that HR which was close to my 1k call-out HR.
Real-Time effort does not work at all for me, while average reported thresholds over more than hundred activities come close.
