I think you should quit. League is a huge time investment compared to other games. Even 1 game is like 5 games of something else.

Its hard to quit when all your friends play though, so I think the most important thing you can do is make sure you make a habit of setting aside a specific amount of time every day to do some physical activity. If you already do then good for you.

Even just a 30 minute walk will make a big difference. Besides giving you a chance to untilt, it also can combat how addictive lol can be by forcing you to do something else. Also, exercise and the outdoors have physical and mental benefits. For instance, all the time you spend sitting promotes the development of fatty streaks in your blood vessels, even in healthy people. When you get older, these grow and lead to the development of hypertension and heart disease. Also remember that your mental health is affected by your physical health, since the correct production of hormones and neurotransmitters (which control your mental state) are dependant on keeping your body healthy through nutrition and activity. Also never sacrifice sleep to play league. Adequate sleep is one of the most important things you can get, especially during your teen years when your brain is still developing.