Your teenage years are often when you're at your healthiest: You're young, probably haven't experienced a big health scare yet, and any unhealthy habits may not taken a toll on your body. But that doesn't mean that you should take good health for granted. Adolescence is arguably the most important time in your life to start developing healthy habits that will benefit you years down the road.

From the annoying stuff you've been told a million times (remember to floss! eat your veggies!) to big preventative measures that can set the stage for great health later in the life, we've compiled 20 nutrition, fitness and wellness habits that everyone should adopt by the age of 20.