This may be a little OCD to talk about training when you are waiting or killing time... but I spend quite a bit of time lately waiting for subway/streetcars and have been thinking about maybe working on like ankle mobility or something like that.
I remember Eric Cressey mentioning that a simple thing he does is stand on one foot whenever he brushes his teeth... small but if you do that 2x a day then it might pay off in the long run.
So sometimes when I'm just standing around waiting for something I do that- stand on one foot.. also I have some ankle mobility issues (that I think come from playing a heck of a lot of hockey with my ankles tied tight) so I've been trying to use those mobility drills that were posted on this forum:
Not sure if its a good idea to do the barefoot ones with shoes on?
I'm so busy these days it feels good to use all the time I can get.. anyone else have stuff they try to squeeze in at the unusual times?