This cream helps to diminish muscle soreness and ache after vigorous excercise. It forces oxygen below the surface upon application. Strenuous physical exertion depletes muscle oxygenation and can cause local lactic acidosis. Mucle aches and stiffness that result can be improved with the cream's application both prior and after working out, which increases local oxygen availability. 4.3 oz Availability: Usually ships the next business day 1016$40.00 Free Shipping on orders $19.00 or more!