Due sitting work I had to find some different sitting positions to stretch some muscles, rest some and as Ido Portal says it “move” or as Kelly Starrett says “Your best position is your next position“
So I used Google Images search to find different positions, get inspired and found some really interesting writings.
An interesting research paper Influence of different positions on hemodynamics derived from noninvasive transcutaneous Doppler ultrasound that introduced me to a new field called Hemodynamics which as noted on the Wiki page it studies blood flow, motion and equilibrium under the action of external forces.
Great stuff is also at http://deskhacks.com/reduce-standing-desk-fatigue/ (Some are from Kelly Starrett)
Me practicing it
Exercise is not movement – http://www.katysays.com/
PS: For timing I use http://e.ggtimer.com/20minutes