No way! I would like to experience that someday! And maybe you will tell me that this “outdoor” is not flat? And there are some…hills? I would love to see some hill…
Sorry for off topic 
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I wrote a calculator specifically for this purpose. Telling people how much to eat of what macronutrient, daily, based on their daily training demands.
RP Endurance Macro Calculator (EMC) (it has a weight loss phase calculator and a weight maintenance phase calculator built in)
If this post is against user guidelines because it’s marketing a product I wrote, I will happily remove the link! Someone let me know!
Things like “InBody” and all the at-home body composition analyzers use bioelectric impedance analysis. One major flaw is its sensitivity to hydration status and changes. Really sensitive!
Changing hydration status in a single user from very dehydrated to very hydrated could change their reported BF% from like 20% to 14%, no joke. BIA measures how much electricity is “lost” to your fat tissue which doesn’t conduct electricity very well. The more fat you have, the more electricity is lost between their sensors. The more water you have, the leaner it will report you. Likewise, the less water you’ve got onboard, the more fat it will report you as a percentage.
So, with any BIA measurement, if it is corroborated through visual inspection (looking at progress pictures or in mirror, or by what friends/family have been telling you, unprompted), by how clothing is fitting/feeling, or by what we’re seeing on the scale, then we can use it as another piece of semi-reliable data. But if it seems at odds with what we’re genuinely seeing in any of those measures, or it says something like you’ve lost muscle mass over a time period where you were gaining substantial strength in the weight room…then we should probably assume something is amiss.
Your fancy scale uses BIA to figure out body composition and then BMR from that. So your BMR measurement is likely not super accurate… but probably not life-endingly bad either.
For weight loss: You might be able to get away with just BMR + workout burn = daily calories, assuming you’re using a calibrated power meter to gauge your kcal expenditure.
When you move into a weight maintenance phase afterwards, you need to increase kcal substantially though. Reason: you burn kcal based on your activity throughout the day too, unless you are literally comatose in bed all other times of day. Even chewing burns kcal. Extremely sedentary people still must take into account their activity level when calculating kcal consumption needs.
Hope this helps! Feel free to ask any questions.
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