Not even a month ago, Xert by Baron BioSystems, released What's My FTP? on the Garmin Connect IQ ecosystem. The premise is simple: if you have a smart Garmin head unit (520, 820, 920, 735, 1000) and an on-bike power meter, you can determine your Functional Threshold Power (FTP) with just a few solid, hard efforts, over a period of time.

I'm always skeptical about new product claims, but given Xert's incredibly short but solid track record of apps that are dead-nuts on, I decided to give What's My FTP a try. I put it to work for two of my clients, and all I can say is Wow—the results are incredible!

Now let's show you how to get the same results for yourself.