Ammattilaiset nyrkkeilijät treenaavat rutiininomaisesti lyömällä ja potkimalla hiekkasäkkejä. Ollakseen menestyksekäs yksilön uralla, itsekuri, päättäväisyys ja kärsivällisyys ovat olennaisia ominaisuuksia.. - Kuvapankin valokuva ja kuva

Boxers at the professional level routinely train by punching and kicking sandbags. To be successful in the individual's career, self-discipline, determination, and patience are essential qualities.

Boxers at the professional level routinely train by punching and kicking sandbags. To be successful in the individual's career, self-discipline, determination, and patience are essential qualities.

Boxers at the professional level routinely train by punching and kicking sandbags. To be successful in the individual's career, self-discipline, determination, and patience are essential qualities.

Boxers at the professional level routinely train by punching and kicking sandbags. To be successful in the individual's career, self-discipline, determination, and patience are essential qualities.

Boxers at the professional level routinely train by punching and kicking sandbags. To be successful in the individual's career, self-discipline, determination, and patience are essential qualities.

Boxers at the professional level routinely train by punching and kicking sandbags. To be successful in the individual's career, self-discipline, determination, and patience are essential qualities.

Boxers at the professional level routinely train by punching and kicking sandbags. To be successful in the individual's career, self-discipline, determination, and patience are essential qualities.

Boxers at the professional level routinely train by punching and kicking sandbags. To be successful in the individual's career, self-discipline, determination, and patience are essential qualities.