| They take personal fitness very seriously here, with even the old dears in their eighties and nineties taking part. |
| The people that truly succeed in the fitness industry walk their talk by promoting and leading healthy lives. |
| The simple reason for this is that too much emphasis is placed on physical fitness to the detriment of skills and team play. |
| We predict the relative fitnesses of hybrid genotypes by calculating the expected numbers of each type of incompatibility. |
| We ignore environmental variation and deal directly with the fitnesses of genotypic values. |
| But more importantly, it demonstrated that cultural evolution cannot be predicted purely on the basis of genetic fitnesses. |
