| Physical traits and testosterone
|
| high-testosterone men, 8
|
| muscle mass and, 15
|
| Phytochemical ecology, 18
|
| Phytotestosterone, 96
|
| Postema, Pam, 139
|
| Potter, Stephen, 70, 90
|
| Prairie vole, 98
|
| Prehistoric humans
|
| Australopithecus, 3435
|
| brains, 59
|
| dangerous environment and, 115
|
| female, 3031
|
|