For building upper body strength, the best exercises include push-ups, pull-ups, bench presses, and dumbbell rows. Push-ups engage the chest, triceps, and shoulders, while pull-ups effectively target the back and biceps. The bench press is a classic strength training exercise focusing on the upper body, primarily the chest and triceps. Dumbbell rows promote back strength and shoulder stability. Incorporating isometric exercises, such as planks, can also enhance overall upper body stabilization and endurance, contributing to a well-rounded strength training program.