A brief history of the Yoga tradition (covering both Vedantic and Tantric influences)
It is believed that 3500 BCE yoga was already being practiced based on a seal found in indus valley showing a man sitting cross legged....
This Video is a short Video about breathing into your belly, rip cage and upper chest and combining them eventually to the full yoga breath. As usual take it easy, don't do it, if it does not feel good, especially if you have asthma or other respiratory issues. If you have never done this before start with just trying to breath into your belly and work your way up.