not to rain on your parade at all, but if that's all you're eating, it's not really all that healthy. you don't seem to have much fat in your diet, nor complex carbs, nor protein. fat is important (especially for men) due to it's effect on testosterone levels in the body. if you don't get enough protein, you'll lose muscle tissue, which will decrease your overall metabolism, and complex carbs, like cold-rolled/steel-cut oatmeal, don't spike insulin levels the way fruits/simple sugars do. what's your overall diet like? (below is a quote regarding dietary fat & T-levels, just fyi)
linky!