The horse is an herbivor, which means he only eats plant life, grasses mostly. If no grass is available they will need hay and some kind of grain to make sure they get all the nutrition they require....
Take food in an appropriate and balanced way. Everything in moderation, and not through gluttony.
I think it means live your life to the fullest and not live just for anything
.
It means, you should eat to survive instead of living to eat. As in, you should value life more than food.
Or maybe: Eat food that keeps you healthy; don't make food your obsession or addiction.
you are what you eat is the corect way to say it because if you eat something unhealthy then you are unhealthy and if you eat something healthy then you are healthy.
It's like if you eat fatty foods you will be fat and if you eat healthy foods you will be healthy. So to put it in another way what you eat is what you become.