Have ever been warm but had cold feet or hands? A common reason for this is poor circulation. If you have poor circulation, yogacan help. Adding increased blood flow to yoga breathing exercises can help oxygen to travel throughout your body. Oxygen is essential for the cells in any human body to produce energy. You may have not known this, but inadequate oxygen flow to the brain can lead to fatigue. If you have ever wondered why you are always tired, one possibility could be inadequate oxygen levels. Many yoga poses encourage the veins to expand and contract which helps to have open and clear channels in the body. Better flow and circulation can clear blood clots and help prevent heart attacks as well.