2. Jog or Go For A Brisk Walk
Any kind of physical exercise is the key to staying healthy and improving blood flow is no exception. When you exercise, you force the heart to work harder in a positive way, and you also exercise your lungs. When your lungs expand, you inhale more oxygen, allowing that oxygen to get into the bloodstream and to the muscles, while at the same time exhaling more carbon dioxide. So not only are you improving blood flow, but also the actual quality of your blood constituents.
A 2003 study in Circulation journal showed how jogging in particular advanced the aims of the circulatory system and improved circulation. It also improves blood vessel dilation, allowing more oxygen-rich blood to not only pass through but pass through at a more rapid rate. This gets oxygen to the muscles that need them quickly and in plentiful supply, preventing cramping. The added benefit is losing weight and being fitter, so putting less strain on the body in between, thereby alleviating blood flow constraints.