I don't think the analogy works so well ... programming and exercise are very different. Once you're not a beginner, programming mostly becomes about the speci

I don't think the analogy works so well ... programming and exercise are very different. Once you're not a beginner, programming mostly becomes about the specific domain youre working on, rather than the code. So improvement comes from a better understanding of banking or file systems or whatever you're doing, rather than cross-training in some proxy thing the way you do with exercise.