"Knowing which health checks and tests to get when can prevent illness and problems, and even save your life. This easy-to-use guide explains all the common health tests so that you can understand and manage your well-being. When you've had a physical, how often do you understand what the results really mean for your health and your lifestyle? You've probably heard of good cholesterol and bad cholesterol, but what does that mean? And what can you...

Updated to fully align with the 2020 NEC, this trusted on-the-job reference contains plain-language explanations, advice, and analysis for every provision. You will get discussions of the rationale behind specific rules that enhances your understanding of both meaning and application. This handbook features thousands of detailed diagrams and photos as well as in-depth discussions regarding controversial wording and actual errors, together with possible...