Release your psoas

I've only recently become interested in the psoas muscle and its effects on running. But is actually very well studied in yoga and other disciplines.

Resources
* http://www.yogajournal.com/practice/169/?page=3
* http://touchoftao.blogspot.co.uk/2010/10/overview-of-psoas-muscle.html
* http://earthbalance-taichi.com/2012/01/psoas-muscle-in-tai-chi/
* http://upload.wikimedia.org/wikipedia/commons/b/b2/Gray430.png
* Relationship to bulging belly

First run at 85 bpm

I did a 1 km very slow warmup then popped the headphones on playing the 85 bpm Spotify playlist posted earlier in the week. It felt like an insane pace, but the subsequent 2.5 km was my quickest so far.
(While the playlist is not mixed like a Dance compilation, the gaps do provide a nice pause to gather your focuses.)