Are unfit and unhealthy people happy? I used to think that I was happy when I was like that but recently I have discovered that I can feel even better. Now that I am fitter and healthier, following a better diet and exercising more I feel so much better. I am sure that it is not just the good chemicals being released when I am exercising or the fact that I am carrying around less weight. I am sure that healthier foods improve your mood and looking better increases your self esteem which also makes you happy. It is all good!