HI,
I'm in week 6 of phase 1 in the Foundation training program. I've noticed on the last 3 day 6 LSR's that at about 2.5 hours my heart rate will rise to about 160bpm & no matter how much I reduce effort my HR will not come down. If I stop & rest for 2 minutes HR returns to about 130 or 140 but will pop up to 160 within a minute of slow running (6;30 per km)
I've also been experimenting…