Push-ups are one of the most effective exercises for strengthening the upper body and core. Not only do they target the chest, shoulders, and triceps, but they also engage the lower back and abdominal muscles, making them a full-body workout. To perform a proper push-up, start in a plank position with your hands slightly wider than shoulder-width apart. Keep your body in a straight line from head to heels, and lower yourself until your chest nearly touches the ground. Push back up to the starting position, keeping your elbows close to your body for optimal form. For those just starting, modified push-ups, often done on the knees, can help build strength gradually. As your fitness improves, try variations like wide-arm push-ups for more chest focus or diamond push-ups for targeting the triceps. Incorporating push-ups into your routine not only enhances muscle strength but also boosts endurance and stability. Remember, consistency is key, so aim to include them in your workouts several times a week to see notable improvements. Additionally, consider pairing push-ups with other bodyweight exercises such as squats and lunges for a balanced workout regimen.