The Strength skill increases the player's Max Hit with melee weapons. Max Hit determines the maximum potential damage which can be dealt on a successful attack, before damage reduction is accounted for.
Strength experience can be earned by using the Slash attack style during combat. 0.4 XP is awarded per point of damage done to enemies. This can be increased by 7% by equipping the Gold Emerald Ring. Fishing in the Barbarian Fishing area grants Strength experience as well.
Raising strength to level 99 will unlock the Strength Skillcape for purchase from the Shop. Equipping the Strength Skillcape will provide a +10 melee strength bonus.