If you were thinking about caloric restriction

In case looking like this guy didn't scare you away from caloric restriction, have a look at this interesting piece on Slate. Some things are not worth the supposed benefits,

Dean also discusses a common side effect of CR in men: loss of libido. Unlike the obsessive behaviors, which he succeeded in cutting out, he found he couldn't boost his sex drive. Instead, by mental effort, he turned the drawback into a benefit: He came to enjoy having more time and attention for things other than sex. Dean connects his loss of libido to a decline in other instincts that he identifies as conventionally masculine: He feels less aggressive and selfish, and has less of an urge to use people for his own ends. He has become very interested in Buddhism and in the teachings of Ghandi (who, of course, also starved himself).

You might end up all spiritual and shit.