Pull-ups are great for building shoulder muscles, but don't worry if you find them a chore — you can still strengthen your shoulder muscles and build upper body muscle with this 10-minute, dumbbell-only workout.
A space-efficient way to work with various weight sizes at home is by getting a pair of the best adjustable dumbbells, which allow you to move up or down in weight as you train. But if you're at the gym or only have fixed-load weights, choose a weight that'll challenge your muscles but won't affect your form.
