Straining, or effort, refers to the physical or mental exertion required to accomplish a task. It often involves pushing oneself beyond normal limits, whether in lifting heavy objects, completing challenging exercises, or focusing intensely on a problem. This effort can lead to fatigue, but it is also essential for growth and improvement in various activities. In physical activities, straining can enhance muscle strength and endurance, as seen in sports like weightlifting or running. In mental tasks, such as studying or problem-solving, effort is crucial for learning and skill development. Balancing effort with rest is important to avoid injury and burnout.