As one reaches their 40s, good sleep becomes crucial due to increased risks of chronic diseases, cognitive impairment, weight gain, and weakened immunity. Poor sleep quality can lead to mood swings, anxiety, depression, and can strain relationships and overall life satisfaction. As one reaches their 40s, good sleep becomes crucial due to increased risks of chronic diseases, cognitive impairment, weight gain, and weakened immunity. Poor sleep quality can lead to mood swings, anxiety, depression, and can strain relationships and overall life satisfaction. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle