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No work stress as I'm not working at the moment. I'm the least stressed I've been for years, thankfully.
Stages single sided. Ive got no reason to think it's reading wrong. Yeah every zone has been bumped up a bit, Z4 is around 230-240 now and it felt fucking hard work today
EDIT: Z4 I meant, not 3
TooTallTim-
What was your HR in that zone compared with old?
You're zones dont just suddenly bump up so it's quite a startle as you're suddenly asking the body to work a lot harder.I'd re test tbh, it's easy and quick. And go from there.
If your threshold is actually 260 ridingat 230 should be pretty easy.
Re test. See what that says and come back.
Then either take a few days off, if you are tired. Or dial back the numbers a little so you can complete the prescribed sessions. The numbers dont matter, the work does. I've all but given up riding to power. I ride to perceived effort now, and power is whatever it is for the energy system I want to target. And I use HR to confirm where I am.
skinny
Have all your power zones changed since the ftp went up?
What is the power target for the endurance rides that you cant meet?
Are you sure that 261w is true, I'd re test?
What powermeter are you using?
Have you been very stressed with work over the past few weeks?