Ignition is usually the easiest of the three to check because on most engines, all you have to do is pull off a plug wire and check for spark when the engine is cranked. On coil-over-plug DIS systems, there are no plug wires so you have to remove a coil and use a plug wire or adapter to check for a spark.
Stress can affect every part of your body. muscle aches, head aches, how your hair grows, the texture of your skin, it can affect your menstrual cycle.
Stress is also associated with an increase in blood pressure, which can damage blood vessels and the heart over a long period of time. Less acknowledged is the effect of stress on the lungs, and the role of lungs in increasing blood pressure and powering the body to deal with the stress. How the Lungs React. There are two types of stress: acute and chronic. Acute stress is the body's reaction to a sudden, immediate, life-threatening event.