What is basic safety practices related to physical activity.

Why do farmer's kill animals in a mean way, don't farmer's have feeling's?

Ihave a really high metabolism and only weigh 70 pounds (13 almost 14). people always ask me two questions: do you ever eat and how do you eat so much and stay so skinny.i am worried that a high metabolism wont me forever. what are some safe steps i can take to maintain being fit. (also, i already work out i am a dancer so i get cardio a lot)

Which of these is likely to be the best source of valid health information?