As individuals we should strive to become healthy in general, in body, mind and spirit. Note that I have said "as individuals" rather than as "martial artists". I stated this because I believe everyone should value their health, as a collective consciousness, not as only a certain group of individuals (e.g. Martial artists, athletes etc). The reason for everyone striving to become healthy is that as a a population or collectives, we can evolve, as according to science in this physical plane, only populations evolve not individuals. I don't fully agree with that concept but I am going to flow with it for now. If we all worked together to become healthy as a population and evolve, we can become something much greater. Greater as in the greater version of ourselves. Though we should all strive to become the greatest.
subliminal video to eat healthier: https://www.youtube.com/watch?v=W_Py1b7eCWE
Here is another one: https://www.youtube.com/watch?v=kLtEbacLD8I
(it doesn't matter which one you use. However one may be more effective the the other. If you want you can just serach for other subliminal videos yourself on youtube.