Communicable diseases and non communicable diseases have a significant difference. Communicable diseases which are also known as transmissible diseases are an illness which is caused from infection. Most common spread of these diseases are fecal-oral, food, contact with contaminated fomite or skin contact. HIV is an example of communicable diseases. This can be transmitted through intercourse with another. It isn't curable after it reaches a certain point. At an early stage HIV can be functionally cured, but it's hard to detect.
Non communicable diseases are diseases that are not transmitted directly from one person to another. For example, Parkinson's disease, diabetes and osteoporosis. They are responsible for almost 70% of all deaths worldwide. These types of diseases can also be inherited genetically from those with history of non communicable diseases. Its more likely to be inherited rather than showing up. Diabetes is a diseases that causes too much sugar in the blood, making it very unhealthy. You must take insulin in order to balance the sugar intake.
Well it depends for what like donating blood you can't give blood to a person with o negative if you have o positive because the mixing of them can and most likely well cause blood clots
The principle of progression states that you should increase overload, which can be achieved by using FITT when your body adapts to its present routine. The specificity principle states that only targeted exercises will improve specific fitness goals.