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Working biceps out -
Female athlete doing bicep curls -
Athlete drenched in sweat -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness -
Young man hand holding dumbbell up exercises at gym fitness