Bodyweight exercises can be beneficial for all fitness levels as they incorporate functional movements that utilize one's own weight for resistance. Exercises such as push-ups, squats, and planks enhance strength, flexibility, and balance. They can be easily modified to suit different fitness abilities, allowing beginners to start with simpler variations while more advanced individuals can increase intensity or complexity. Additionally, bodyweight exercises promote core strength and can be performed anywhere, making them accessible and convenient for everyone.