title: Toning the upper arms.
abstract: Exercising the upper arms-the biceps and triceps muscles-increases their tone or strength, and, primarily in men, their size. The biceps is the muscle that flexes the arm, and the triceps straightens (extends) the arm.
authors.affiliation: University of Louisville, Louisville, KY, 40292, USA.
authors.forename: B
authors.initials: B
authors.lastname: Stamford