Impact-attenuation systems, e.g., for use in footwear, can help control foot positioning during a step cycle, e.g., to help reduce or eliminate misorientation of the foot, and the fatigue and/or strain that may result from such misorientation. Articles of footwear including such impact-attenuation systems may include: (a) an upper member; and (b) a sole structure engaged with the upper member. The sole structure may include: (i) a first impact-attenuating member located in a heel portion of the foot-supporting member, and (ii) a second, separate impact-attenuating member located at a rear, lateral heel portion. The second impact-attenuating member may be designed and/or configured to provide less resistance to an impact force as compared with the first impact-attenuating member.