# Custom workouts and FTP

**URL:** <https://forums.zwift.com/t/custom-workouts-and-ftp/611303>\
**Category:** General Discussion\
**Created:** [August 30, 2023, 11:24am UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303 "2023-08-30T11:24:21Z")\
**Posts on this page:** 12\
**Page:** 1

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**Author:** ![pmbdk](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/pmbdk/32/493694_2.png) [@pmbdk](https://forums.zwift.com/u/pmbdk)\
**Post date:** [August 30, 2023, 11:24am UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/1 "2023-08-30T11:24:21Z")

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Hi there, I created a few custom workouts when i took my first FTP test. I edit the workout in watts (instead of % of FTP) as that makes more sense to me. I’ll update the workouts from run to run depending on how it feels and how my target HR matched my actual HR.

Being a total noob I assume my FTP will increase a lot next time I test it. So I just tried increasing it, and it seems all my workouts are changed as well. This does not make sense at all to me. I get that it’s nice to make your workouts follow your FTP so that workouts can be matched to anyones FTP, but isn’t there a way to tell Zwift _not_ to update my workouts when my FTP changes?

Suddenly giving all my workouts an increase of 20 watts (or whatever) will basically make them useless to me…

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**Author:** ![Gerrie\_Delport\_ODZ](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/gerrie_delport_odz/32/437556_2.png) [@Gerrie\_Delport\_ODZ](https://forums.zwift.com/u/Gerrie_Delport_ODZ)\
**Post date:** [August 30, 2023, 11:28am UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/2 "2023-08-30T11:28:38Z")

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Workouts are based on FTP not watts.

What program do you use to create a workout?

Is this for running or cycling?

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**Author:** ![pmbdk](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/pmbdk/32/493694_2.png) [@pmbdk](https://forums.zwift.com/u/pmbdk)\
**Post date:** [August 30, 2023, 11:29am UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/3 "2023-08-30T11:29:29Z")

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> [@Gerrie\_Delport\_ODZ](#):
>
> What program do you use to create a workout?

I am just using Zwift’s own custom workout creator.

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**Author:** ![pmbdk](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/pmbdk/32/493694_2.png) [@pmbdk](https://forums.zwift.com/u/pmbdk)\
**Post date:** [August 30, 2023, 11:30am UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/4 "2023-08-30T11:30:43Z")

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> [@Gerrie\_Delport\_ODZ](#):
>
> Is this for running or cycling?

It is cycling. There should really be a checkbox when you create the workout to indicate if you want the workout to be updated when your FTP changes.

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**Author:** ![Gerrie\_Delport\_ODZ](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/gerrie_delport_odz/32/437556_2.png) [@Gerrie\_Delport\_ODZ](https://forums.zwift.com/u/Gerrie_Delport_ODZ)\
**Post date:** [August 30, 2023, 12:09pm UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/5 "2023-08-30T12:09:22Z")

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> [@pmbdk](#):
>
> I’ll update the workouts from run to run depending on how it feels and how my target HR matched my actual HR.

There is no need to change the workout, you can use the workout bias button to make it harder or easier during the workout.

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**Author:** ![pmbdk](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/pmbdk/32/493694_2.png) [@pmbdk](https://forums.zwift.com/u/pmbdk)\
**Post date:** [August 30, 2023, 1:52pm UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/6 "2023-08-30T13:52:27Z")

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> [@Gerrie\_Delport\_ODZ](#):
>
> workout bias button

I didn’t know that there was such a thing. Nice. 🙂 Unfortunately I can’t really use the Zwift Companion app while I’m training at the moment, and in any case I adjust my overall workout after training.

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**Author:** ![B\_Jimmy](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/b_jimmy/32/497855_2.png) [@B\_Jimmy](https://forums.zwift.com/u/B_Jimmy)\
**Post date:** [August 30, 2023, 2:57pm UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/7 "2023-08-30T14:57:52Z")

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> [@pmbdk](#):
>
> but isn’t there a way to tell Zwift _not_ to update my workouts when my FTP changes

Wouldn’t the easiest be to just not change your FTP in Zwift (or change it back if it does update itself)? Your TSS score at the end of the ride would be incorrect but I don’t think you see that anywhere other than the ride summary page so you could just ignore it.

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**Author:** ![Andrew\_Nuse](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/andrew_nuse/32/535613_2.png) [@Andrew\_Nuse](https://forums.zwift.com/u/Andrew_Nuse)\
**Post date:** [August 30, 2023, 2:58pm UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/8 "2023-08-30T14:58:07Z")

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Bias is a GREAT feature often overlooked by many.

If you don’t ride often, your daily FTP will certainly sway a lot, and being new, it will change quite often too (and workouts will not change your FTP, only freerides and races will).

Personally, I wouldn’t be adjusting your FTP in your profile; and workouts are meant to hit Zones, not watts; this is by design.  
Ignore power, focus on zones.

The whole bias thing is really meant to adjust on the fly if you’re feeling good/bad at that time.

* * *

An example for me is days I’m not sure what to do and end up doing a custom workout that’s Z2 or Z4 focused; and I’ll use workout bias to hit a target HR (since you can’t really do HR based zones due to… a complex multitude of reasons) but you can kind of simulate it with workout bias.  
So say I got a lot of rest, but want a good Z2 ride, I may be up, capable of 10w on power, and sitting 5-8bpm lower; so I’ll push the bias up.

But your “FTP” and watts capable really changes daily, and through the day. So it’s not worth focusing on power numbers specifically. (see my example above about my Z2 some days being upwards of 10w higher)

(mostly ignore hyperlink title; see bottom of page)

> **[Manually Adjusting Your FTP](https://support.zwift.com/en_us/manually-adjusting-your-ftp-S1bUyp38v)**
>
> Manually Adjusting Your FTP Functional Threshold Power (FTP) represents the highest wattage you can expect to average over an hour. In Zwift, your FTP is us...

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<div class="post-metadata">

**Author:** ![pmbdk](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/pmbdk/32/493694_2.png) [@pmbdk](https://forums.zwift.com/u/pmbdk)\
**Post date:** [August 30, 2023, 4:03pm UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/9 "2023-08-30T16:03:50Z")

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> [@B\_Jimmy](#):
>
> Wouldn’t the easiest be to just not change your FTP in Zwift (or change it back if it does update itself)? Your TSS score at the end of the ride would be incorrect but I don’t think you see that anywhere other than the ride summary page so you could just ignore it.

That is probably the easiest thing to do. I don’t think I’ll ever use other peoples workouts and since that is (afaics) the only reason for having the FTP in Zwift I can just keep mine at some random level…

Does the FTP (in Zwift) change when I take an FTP test?

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<div class="post-metadata">

**Author:** ![pmbdk](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/pmbdk/32/493694_2.png) [@pmbdk](https://forums.zwift.com/u/pmbdk)\
**Post date:** [August 30, 2023, 4:07pm UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/10 "2023-08-30T16:07:50Z")

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> [@Andrew\_Nuse](#):
>

Good points, Andrew. In the ~3 weeks I have been training I see a variation of ~3-4 bpm at set power levels for my workout. But again, I’m adjusting after every workout. I will try to see if I can adjust the bias (only problem is that I change to Youtube for music on the phone after starting the workout, so I can’t use the companion app, as that turns off the music).

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**Author:** ![Andrew\_Nuse](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/andrew_nuse/32/535613_2.png) [@Andrew\_Nuse](https://forums.zwift.com/u/Andrew_Nuse)\
**Post date:** [August 30, 2023, 4:22pm UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/11 "2023-08-30T16:22:56Z")

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Check the link I provided; you can adjust the bias via the popup action menu on all devices.

If you’re 3 weeks into this, then yes, expect your abilities to alter dramatically; and some workouts don’t do the best at counter-acting this (again because they’re FTP based, and without anything to check your changing FTP… they go nowhere)

So I definitely would recommend fitting in a race for example at the end of each week; unless you really love FTP tests (most don’t; and races are more encouraging in my opinion)

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<div class="post-metadata">

**Author:** ![pmbdk](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/pmbdk/32/493694_2.png) [@pmbdk](https://forums.zwift.com/u/pmbdk)\
**Post date:** [August 30, 2023, 7:52pm UTC](https://forums.zwift.com/t/custom-workouts-and-ftp/611303/12 "2023-08-30T19:52:02Z")

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> [@Andrew\_Nuse](#):
>
> Check the link I provided; you can adjust the bias via the popup action menu on all devices.

Ah! Didn’t see that! Will try on my next workout!
