How To Change FTP during workouts

So every time I log in to ride, I have to pick my profile, and have my power meters, etc search.

But when I rode for the first time, how is Zwift determining what my FTP should be and how many Watts I should be pushing out. The first part of the ride felt pretty difficult (which I liked), but I dont want to get drainer doing these workouts for too long.

Is there a way to customize this and I’m missing it?

Also, when I try to save my data, Zwift crashes. Any thoughts?

If you’re using an electronic trainer it adjusts things based on how the road should feel at the time for a 75kg rider. Your FTP is not taken into consideration just like it’s not out in the real world, rather a resistance curve based on road gradient / wind / weight / etc… Your FTP should only matter to you if doing an FTP % based workout which the current version of zwift doesn’t seem to be able to do. I am currently using my garmin to mark laps for wattage zones for the time being.

Allan,

Ok, based on your answer which really helped so thank you. Is there any way to change the 75kg? I weigh less than that, so effectively using that 75kg gives me a harder workout (which I am not complaining about either)

but still wanted to check on things

Hi Jared,

They have a little talk going on about weight here to which I voiced a few concerns. It seems like they have a working solution coming soon.
https://support.zwift.com/hc/communities/public/questions/201038179-Weight?locale=en-us

If you look in DOCUMENTS/ZWIFT/ACTIVITIES you’ll probably find your data files despite any crash on exit.