but it doesn’t seem to be a major problem, since it’s been going on for months
Hey @Dafftt
Sorry late reply. I hope I can give you, and others wondering the same a proper answer.
Your training load is calculated from both duration and intensity together. A few seconds at unrealistic pace doesn’t move the needle. Your training zones are tied into Critical pace/power profile.
It could be worth reading up more here:
What shapes your training zones, your training load, and future training prescription is Thresholds which is tied to sustained longer efforts from 5 mins to up to an hour. There is some overlap within the shorter duration 3-6 min realm, but even if your MSS was skewed a lot, and your long sustained efforts were accurate, it would not affect your training load in any meaningful way.
That’s the critical pace model: your threshold is built from you can hold, not from a brief spike.
So even if your graph shows 3 minutes at imposible pace, the system is not reading it as threshold effort. It knows the difference between short burst of high speed from real sustained effort.
Worth noting too is that even where these spikes from watch recording erroneously, and they get logged, they’d affect your sprint speed estimate (MSS) not your critical pace. In a case where you’d forgotten your watch ON and drove a car, or bike over longer time, then yes, it would log this as sustained effort (GIGO). Does that make sense?
As an endurance runner/athlete, your training is built around critical pace and aerobic threshold, not sprinting capacity. MSS simply doesn’t factor into what gets planned for you. does that make sense?
The Best Efforts table you shared on other thread, where 4:10min/km data artifact is present, won’t influence how your training gets planned. Those durations are too short to register as meaningful intensity in the critical pace model for endurance athletes. Unless you are a 800m runner, or sprinter, I would not worry about your training load calculations if you have some erroneous short duration spikes in your data.
We are still going to fix the way we parse our fit files. The team is actively working through as we speak.
I hope I have given a satisfactory reply to you @Dafftt
Best, MJ
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Thanks MJ, that makes perfect sense. 
Hope it helps Dafftt and any other with the same question.
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Good morning, and sorry for the absence this time… I was injured and preferred a “free” training period. I’ve noticed the progress in the app and I must say it’s working really well.
I’d like to propose a great feature for the future.
Allow the AI Coach to modify a workout and create new ones.
I’ve often found myself in situations (aggressive tapers or impromptu races/workouts after just a few days) where the AI Coach has scheduled workouts that are completely different from the ones proposed and that can’t even be modified via the Workout Wizard. So, if you could create new workouts and add them to the calendar, it would be truly fantastic. I realize it’s a lot of work, but it doesn’t hurt to dream 
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Love this - and I’m pretty sure it’s on the roadmap! But yes it’ll take a lot of work…
Personally I can’t wait though. I love the improved AI coach, chatting often about things like achilles rehab or other health issues, or how I slept, or why I modified or substituted a workout, how it’s impacting my training, and AI coach is giving great modification recommendations!, So I’d also love it to (with my approval each time ofc!) edit my planned training.
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I have suggested before but I will put it here.
I have used the AI coach to come up with a suggested weekly schedule and progression for my ultra endurance cycling event this year. It is full of context based on my discussions.
I would like to save the weekly schedule as a personal “ultra endurance cycling” template in my library. Then make that my plan with Athletica managing the build progression and recovery weeks.
It is an advanced use case but also a logical progression as we gain knowledge as self coached athletes using Athletica and the principles from HIIT Science.
I see it as reducing friction when your target events do not quite fit the global templates available. The less we feel the need to intervene week to week; the better our engagement.
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Those are all excellent ideas. Enabling ‘write’ privileges to your Athletica Coach in line with your individual context is certainly on our roadmap and we will get there.
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What’s New — Last 2 Weeks April 2026
April 20
- Recovery page (Insights → Recovery) now shows where each day’s HRV, resting HR, and sleep data came from. Hover any point on the chart to see the source.
April 21
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Coros users: your nightly data sync now works even if you have auto-sync push turned off.
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Garmin disconnections are now handled cleanly, with no background errors.
April 22
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iPhone users connecting Garmin now get clear step-by-step instructions to complete the OAuth flow.
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Wahoo connections refresh automatically in the background — the periodic drop-outs should be gone.
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You can now edit and delete sessions saved in Your Library, and push changes to future scheduled copies of that session.
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You can cancel a Velocity subscription directly from your billing page.
April 28
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Open a completed session and you’ll see a planned vs. actual comparison table right there in the Session Overview — no extra clicks.
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Promo codes now work inside the Change Subscription modal.
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Workout descriptions use a consistent time format everywhere in the app (e.g. “WU 30:00 Z2 + 6x (3:00 Z4 + 2:00 R)”).
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New users: the race date picker now tells you immediately if your race is too soon to build a plan around.
April 29
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Coros users: new “Refresh now” button in device settings to pull last night’s wellness data on demand. A second daily sync has also been added in the morning to catch HRV and sleep data published after the overnight pull.
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Wahoo users: fixed a bug that was silently accumulating tokens in the background and eventually disconnecting your device.