{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/9\/97\/Eliminate-Leg-Cramps-at-Night-Step-4-Version-3.jpg\/v4-460px-Eliminate-Leg-Cramps-at-Night-Step-4-Version-3.jpg","bigUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/9\/97\/Eliminate-Leg-Cramps-at-Night-Step-4-Version-3.jpg\/v4-760px-Eliminate-Leg-Cramps-at-Night-Step-4-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":760,"bigHeight":570}4躺着抬腿,拉伸腿后腱。