We hardly pay attention to blood circulation But with a healthy blood circulation we maintain a good flow of oxygen and nutrients to the body, most importantly lungs, heart and muscles. As a heart attack survivor, i need a healthy blood flow especially to my heart. The Aulora pants help me with this by emitting Far Infra Red Rays to promote healthy blood circulation. I use it all the time, even to sleep. My personal favorite is during workouts and after. It reduces my muscle aches during recovery. And with this it also tells me i should probably push the limit a little bit more during exercise.