Ask Paul: July 13 (Premium)

Happy Friday the 13th! Here's what I believe is a record number of Ask Paul questions.
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jimchamplin asks:
Krystal or White Castle?
I'm embarrassed to say I've never tried, or even heard of, Krystal. I will correct that as soon as possible. But White Castle has never been a thing where I've lived, so I've only gone there randomly on trips. I think the last time was somewhere in Ohio when I bought my dad's car and drove it cross-country in 2015. Naturally, I took a picture. Which you can see above.
Nuke OneDrive from orbit
Darekmeridian asks:
Is there a way to wipe OneDrive and start over? ... Does Paul or anyone know of a trick to erase the whole thing maybe and have it sync from my HD a nice well organized set of my files?
As KingNerdTheThird points out in a comment, the easiest way to do this is to open OneDrive in a web browser, delete all your files (though you may want to retain the top-level Documents, Music, Pictures, and Videos folders), and then empty the Recycle Bin.
Uninstall/reinstall built-in Windows 10 apps
cwfinn asks:
If a UWP app, such as Mail, Store, Calendar, etc. becomes corrupt, why can Microsoft support "reinstall" it while we "unwashed masses" can't uninstall/reinstall like any other UWP app?
I don't know the "why" of this. And wright_is mentions a set of command line commands for removing any UWP app from Windows 10. I'll follow that up by noting that the built-in apps are available in the Store, so you can reinstall them if they are removed.

I'll also point out that Windows 10 does at least have a way to do an in-place uninstall/reinstall of UWP apps, including those built-in to Windows 10. To find this, navigate to Settings > Apps > Apps & features, locate the app in question (say, Mail and Calendar) and then select it. Then, select "Advanced options" and find the Reset button. (You can't just uninstall most of the built-in apps from this page.)
Health hacking/intermittent fasting
Zinger asks:
Looking forward to a Health Hacking update. Last we heard you were going to try intermittent fasting. Your posts prompted me to research Keto. Weight down 10% in 8 weeks. Thanks!
Yep, sorry for the delay on this. Like many, I'm looking for that magic bullet that will push me past that inevitable stage of any diet, where you just kind of stall. And intermittent fasting appears to be that solution. That said, I've not really lost (or, thankfully, gained) any real weight in months. So I don't really feel qualified to write to this topic just yet. Which is the why of the delay.

As I noted recently in Reading List: Favorite Audiobooks of 2018, So Far, I strongly recommend that anyone interested in this topic, or in losing weight generally, read The Obesity Code: Unlocking the Secrets of Weight Loss by Dr. Jason Fung.

Also, we finally did find doctors here in Pennsylvania, and I'll be getting my first check-up here in August after our home swap. Perhaps that will trigger an update as w...