# Zone 2 Power vs Heart Rate **URL:** \ **Category:** Training\ **Created:** [February 25, 2021, 10:55am UTC](https://www.trainerroad.com/forum/t/zone-2-power-vs-heart-rate/53997 "2021-02-25T10:55:09Z")\ **Posts on this page:** 1\ **Showing post:** 10
**Author:** ![onemanpeloton](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/onemanpeloton/32/69536_2.png) [@onemanpeloton](https://www.trainerroad.com/forum/u/onemanpeloton)\ **Post date:** [February 25, 2021, 11:40am UTC](https://www.trainerroad.com/forum/t/zone-2-power-vs-heart-rate/53997/10 "2021-02-25T11:40:50Z")
There are many discussions on this subject. See here for further detail: > [@Zone 1 & 2 rides by HR](https://www.trainerroad.com/forum/t/zone-1-2-rides-by-hr/13869): > > Listening today to a Velocast [podcast](https://itunes.apple.com/us/podcast/velonews-podcasts/id1151541159?mt=2&i=1000430433414), around 21-ish min Stephen Seiler recommends and discusses doing the long slow rides/zone2 by HR rather than power as the power is a measurement of what’s happening to the bike rather than the body and doing these by HR better achieves the goal of reducing cardiac drift over time. Thought it was an interesting point and I may convert some of my z1-z2 plan rides to HR rather than power zone targets. > [@How important is HR vs power for aerobic base training?](https://www.trainerroad.com/forum/t/how-important-is-hr-vs-power-for-aerobic-base-training/42547/5): > > This is also something I prescribe heavily to. Watch the trend in your HR with the power your putting out over time during intervals. A high sweet spot and threshold effort interval that is 5, 10, 15min long will definitely find a leveling point. It’s an aerobic effort, so your aerobic system should get into a fairly decent steady state. If your HR is constantly creeping up during steady state efforts, then it’s usually a good indication that your FTP is set too high and you should dial bac… > [@Z2 power vs Z2 HR](https://www.trainerroad.com/forum/t/z2-power-vs-z2-hr/51549): > > So most of us here train to power for everything, but I’ve heard people talking about training z2 to HR. However it seems like my heart rate z2 and my power z2 do not line up in the slightest (power z2 has me at HR z1) . Yes ofc aware that HR is less reliable, but even then, when doing FTP work, this does actually line up. Does this mean I’m doing my Z2 too easy, should it be brought up a notch? Or keep it in line. Anyone here train z2 to HR, what are your experiences. Just curious --- _[View the full topic](https://www.trainerroad.com/forum/t/zone-2-power-vs-heart-rate/53997)._