Why would anyone want to play Runescape for hours when they can do other more productive things? When you play Runescape you could do things such as running outside playing with friends or just reading. I am not telling you to quit but it would be wise.
When you want to play Runescape and to keep healthy at the same time you could try playing Runescape for a certain amount of time then going outside for a certain amount of time. Another keep health a play Runescape is to get a treadmill, and put your laptop on top of the treadmill an jog while playing Runescape. I hope I helped you keep healthy while playing Runescape or to quit it altogether.
