Answer:
keep feet together and balance your weight on both feet
The only guaranteed method is abstinence
You’re not getting enough sleep however taking a few small naps throughout the day can help :)
The ethical system that embraces human’s inclination for self-preservation would be the natural law. It is the body of laws that are derived from right reason and nature. It is what is considered ethically right. Hope this answers the question. Have a nice day.