We have lost some explanatory power in going from ten down to two predictors. But these two predictors are now orthogonal, meaning we can now interpret these without collinearity worries. As previously discussed, the first PC can be viewed as a measure of overall size. We can see this is associated with higher body fat. The second PC shows a negative association, meaning that men who carry relatively more of their substance in their extremities tend to be leaner. These would tend to be men who are more muscular so this result accords with what one might expect. So the PCR here has allowed us a meaningful explanation whereas the full predictor regression was opaque.