Final answer:
Barbell curls and dips are exercises that target and strengthen different muscles in the upper body, primarily the biceps and triceps. Barbell curls work the biceps, while dips work the triceps. Both exercises involve bending and straightening the elbows in different directions.
Step-by-step explanation:
Barbell curls and dips are both exercises that target and strengthen different muscle groups in the upper body. Both exercises primarily work the muscles of the arms, specifically the biceps and triceps. Barbell curls specifically target the biceps, while dips primarily work the triceps. Both exercises involve bending and straightening the elbows, but in different directions. Barbell curls involve bending the elbows to bring the barbell up towards the shoulders, while dips involve straightening the elbows to lower and raise the body.