Another limitation concerns the homogeneity of the sample. First, since we used a weight-training sample, no generalization on the general population can be drawn. Since it is usually weight-training and bodybuilding men who are at risk of pathological outcomes of extreme drive for muscularity, the results might still be valuable for prevention and treatment in this special population. Second, results are only generalizable for men with relatively low body fat percentages, since the FFMI was only interpretable when body fat percentage was below 20%. Third, although our sample is, on average, 5 years older than the usual college sample, no conclusions can be drawn for weight-training men in older age categories. Moreover, the vast majority of the current sample is from Western, industrialized, German-speaking countries and generalization is only viable for these populations. Furthermore, there was a very low percentage of homosexual or bisexual men in this sample (3.2%). Since homosexuality is discussed as a risk factor for eating disorders in men (Russell and Keel, 2002; Freeman, 2005), it would be interesting to investigate its relation to drive for muscularity further.