"150 minutes of moderate exercise" refers to the recommended amount of physical activity for adults to maintain good health. This can include activities like brisk walking, cycling, or swimming, where your heart rate increases but you can still hold a conversation. Engaging in this level of exercise can help reduce the risk of chronic diseases, improve mental health, and enhance overall well-being. It is often suggested to spread these minutes throughout the week, aiming for about 30 minutes on most days, to make it more manageable and enjoyable.