pushups

 pushups  are an exercise metrics post type that show a number of pushups done by the user, often accompanied with an icon indicating the activity of a pushup.

Barnaby Walters
Barnaby Walters uses his open source HTML+CSS+JS Pushups web app (download to clone) to track (nose touch activated) and post (via Taproot's micropub support) pushups as a note variant with inline prose hashtag "#pushups" to waterpigs.co.uk since at least 2013-10-14. Example: Series: https://waterpigs.co.uk/notes/?tagged=pushups
 * http://waterpigs.co.uk/notes/4SYJit/

Aaron Parecki
uses his open source pushup-counter iOS app to track (nose touch activated) and post (via p3k's micropub support) pushups to aaronparecki.com (through p3k) since at least 2013-11-28(or earlier?). Example: Series: https://aaronparecki.com/pushups
 * http://aaronparecki.com/metrics/2013/11/28/143242/

Proto-pushup examples
The following IndieWeb examples document pushups tracking but as a note (or other common post type) without any way of seeing all posts of that type.

Tantek
undefined has occasionally posted pushups tracking to tantek.com as notes, e.g.: No consistent structure yet, requires human interpretation.
 * 2017-001: http://tantek.com/2017/001/t2/100pushupchallenge-initial-test (single set)
 * 2017-041: http://tantek.com/2017/041/t1/100pushupchallenge-week-4 (multiple sets, multiple days)

Beeminder
Beeminder has a native Android app for tracking (nose touch activated) pushups and posting them to both Beeminder and your own site.
 * See IndieWebCamp 2012 Demo

Twitter
undefined on Twitter posted a few pushups logging examples of multiple sets:
 * 2008-07-15, 2008-07-17, 2008-07-25. More linked from: http://tantek.com/w/OneHundredPushUps