The author of the popular South Beach Diet, Arthur Agatson, endorsed functional exercise targeted at building a strong core (like Pilates and StrongPosture exercises). In a recentMSNreport (http://health.msn.com/fitness/articlepage.aspx?cp-documentid=100194940>1= Dr. Agatson advises replacing machine workouts with whole body exercises which engage a fuller kinetic chain, and recommends that "if you take just one gym class a week, make it Pilates".
We agree to the point of using the same words in advising against working what we both call ""mirror" muscles—ones that look good in the mirror or on the beach." The problem lies in that by isolating one muscle other links in the kinetic chain are supported by the machine and so a muscle imbalance is generated.
It's fun seeing ideas once thought of as radical entering mainstream.