First off, drinking's completely up to you. It's like a lot of things you do in life: okay/good in moderation. Of course you have your alcoholics, but you also have those who are dry. You're in high school, don't worry about it. You'll find out enough on your own when you're ready.
You don't need to take health risks to have fun either though, unless this was a question about getting to the grave quicker. If I could do high school over again though, I'd be more productive for sure. I'm 23, progressing in my career already and am loving it, but I feel like I grew up too fast. Enjoy being in high school, DO those after-school activities, meet some new people, discover interests you didn't know you had, all that inspirational mumbo jumbo that actually has a damn good point. Haha.