Suggested workout keeps suggesting Rest day

There are basically 2 suggestions in this thread:

• Reset the long workout day
• Fully charge and power-cylce the watch

Neither of these suggestions worked for me. There is no long workout day setting on the fēnix 6 and charging/turning on/off didn't help for me.

I was finally able to resolve the issue by doing a factory reset on the watch, BUT this comes at a huge expense:

• You will lose your HRV status and need build a new baseline for 3 weeks
• You will lose your training status and need to were the watch for two weeks with 2 outdoor runs per week to get your status back
  • Your training status needs to return back before you get any suggested workouts
• Your maximum heart-rate will be reset and with that your heart-rate zones
• Your lactate threshold will rest and with that any heart-rate zones based on threshold
• Your records (PBs) like longest distance, fastest 5k, 10k etc. will be reset on the watch (but remain untouched on Connect)
• You need to download any music again and link again with your music provider (e.g. Spotify)
• You will loose all customisations to your datascreens
• You will need to add/sort all your apps, widgets and shortcuts again
• If you have any ConnectIQ apps or datafields, those will lose their settings as well.

For me personally my VO2max dropped by two units after the reset. Although I cannot be 100% sure this is linked to the reset, it is likely to be in part related to it, as max HR and threshold are taken into consideration for the VO2max estimate. My effective VO2max calculated on runalyze.com has also dropped a little bit over the last month, but not as much as the VO2max on my watch. So for now I keep it to a combination of factors that caused my VO2 Max to drop that much on my watch. The consequence of this is that now my suggested workouts are back, the tempo's suggested feel to slow for my fitness. Although I'm sure this will improve again over time.

In essence it means by doing a reset, there's a three week gap in your metrics. Now this isn't the end of the world of course, but I would consider this to be undesirable.

So for anybody else, I would recommend to first contact Garmin Support before you do a factory reset. I didn't do that in the end and regret that now... (although I'm not sure they would have been able to help)