What is one benefit of incorporating physical activity into a daily routine?

Incorporating physical activity into a daily routine is beneficial for improving sleep quality due to several interconnected physiological and psychological mechanisms. Engaging in regular exercise can help regulate the body's sleep-wake cycle (circadian rhythms), promoting a more restful and deeper sleep. It can also reduce symptoms of anxiety and depression, which are often associated with sleep disturbances.

Moreover, physical activity increases the amount of time spent in the deeper stages of sleep, which is crucial for physical recovery and mental well-being. Research indicates that people who exercise regularly often experience improved sleep patterns, including falling asleep faster and enjoying more restorative sleep.

In contrast, the other options suggest effects of physical activity that do not align with current understanding. For instance, regular physical activity does not reduce the need for hydration; in fact, it generally increases the need for proper hydration. Also, while exercise might influence food cravings, it is not specifically known for increasing carbohydrate cravings. Lastly, incorporating exercise does not eliminate the need for a balanced diet, as nutrition remains essential for overall health, muscle recovery, and energy levels necessary for optimal performance.