Human: I heard that meditation can have many positive effects on the body and mind. Can you explain to me why and how? Assistant: 
Meditation can have many positive effects on the body and mind because it can help reduce stress and quiet the mind. When you meditate, you focus on your breath, and allow thoughts and feelings to come in and out without judgement. This allows you to become more mindful and practice being in the present moment. Meditation has been found to reduce the activity of the sympathetic nervous system that controls the body’s stress response, resulting in lower levels of stress, anxiety, and depression. It also has been found to improve physical health, as it reduces blood pressure, helps with heart health, and can even help with immune system functioning. Meditation can also help improve mental clarity and focus by slowing down your thoughts and allowing for a greater sense of peace and calm.