Peak Performance Because this is a soccer match, of course we see skilled feet and strong legs—but also notice the arms, torsos, and feats of balance. Deniz Naki (age 21) and Luis Gustavo (age 23) are German soccer team members and are in better shape than most emerging adults, but imagine these two a decade earlier (at age 11 and 13) or later (at age 31 and 33) and you will realize why, physiologically, one’s early 20s are considered the prime of life.
APN PHOTO/AXEL HEIMKEN