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<p>He probably will have a hard time marketing himself as a sports coach or personal trainer (at least at the entry level of such a career) if he himself does not exercise.</p>
<p>In any case, it may be a bit early to think about college majors, although it is definitely worthwhile to consider the longer term career goals, since graduates with non-specific bachelor’s degrees will face a tough time in the job market because there are large numbers of them to compete with for a relatively small number of jobs.</p>
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<p>If he likes math and is good at it, note that majors that involve a lot of math tend to have the best specific job and career opportunities for new graduates (though that may be in relative terms – if he happens to get unlucky enough to graduate in a down economy, it will still be hard to find a job). In that case, he may be able to study what he likes and have a better chance of a good job at graduation. Note that some such majors like math, statistics, and economics typically have enough schedule space open to take out of major courses, or a minor, or even a second major in some other unrelated subject.</p>
<p>With respect to high school courses, best practice would be to take the most advanced courses in all subjects (English, math, science, history, foreign language, etc.) in order to have as strong a preparation as possible for university level work in any subject. AP or IB courses, if available, are typically stronger preparation than regular high school courses, although many are not fully accepted by universities in place of entry level courses in those subjects.</p>