So I'm noticing a sore ankle the past few days.
I've been doing the optional exercise routine from he Hacker's Diet...
it's laddered, so every week or so you move things up a small notch.
I think the troublesome part might be the "Run and Jump", where you jog in

I decided about a month ago that I'd learn to juggle.  Just something
I always wanted to do.
It is a WORKOUT!  I'm not kidding.  An hour or so of trying to juggle,
picking up or chasing dropped balls, and I'm soaked.