Increase vertical and muscle reaction time. Increase local blood flow to sore and achy muscles. Order safe item from us.The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies. Please report us immediately within 48 hours of package received for any kind off issues. No claims will be accepted if reported after 48 hours of package received. Please give your Feedback on the products and your experience shopping with us.