Malice always shortens life. Hence, one should always abstain from entertaining malice. Sleep at day time shortens life. To sleep after the sunrise shortens life.
अनायुष्या भवेदीर्ध्या तस्मादीलुं विवर्जयेत्॥ अनायुष्यं दिवा स्वप्नं तथाभ्युदितशायिता।