goal-oriented teenager working on his body using resistance rubber performs strength training. preparing for the sports season.

abs adolescence adult athlete balance band belly biceps body bodybuilding care chest core determination energy exercise exercising fitness goal goal-oriented guy gym gymnastics health healthy instructor lifestyle masculine model motivation muscle muscular outdoor outside performs person physical playground position power practice preparing pull resistance routine rubber runner season sports sportsman sportswear strength stretching strong success teenager tool torso training trunk upper working workout young