Poor blood circulation can have numerous undesirable effects on our bodies, particularly regarding feet and legs. Warning signs can include numbness in the extremities, unexplainable changes in body temperature, dark circles under eyes, brittle hair and nails, fatigue and exhaustion. Circulation dropping may even result in skin conditions. For these and many other reasons, plenty of us wish we could improve circulation. Now, steps can be taken with a supplement, topical application or innovative technological device, all aiming to help you with circulatory concerns.