Because limps can make strenght potion (nonmember) / super strenght potion(member ). When you drink str potion . u can add more 10lv str !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
so u can hit monster more easy. i KNOW HOW TO MAKE STR POTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(First you get some redspider eyes , and then get limp and u go to varrok where hv a potion house .u talk to him then u say want to make potion then u can get str potion ,but need more 5 gp)