In one sentence, describe what the following article is about: Getting in regular moderate exercise is important for your health. However, you don't want to overdo it. Exercising too rigorously can increase your hematocrit levels. Some good moderate exercises you can do are:  Brisk walking Light bicycling Cleaning Lawn mowing According to the NHS Blood and Transplant, the frequency of giving blood should be a maximum of 4 times a year or an interval of 12 weeks between blood donations. Only do this as a last result and only if you have consulted your physician.  If he or she does approve of this measure here's why it's helpful:  This can cleanse your blood as your body tries to replenish the amount of blood that it has lost, making the circulating blood fresh. This removes excess iron in your body.  An excessive amount of iron is thought to be the cause of atherosclerosis or the hardening of your arteries.  When you donate blood, about 250 mg of iron will be removed from your body cutting your risk of developing cardiovascular diseases. Again, only do this as a last resort because it can have other untoward effects.  Make sure that you consult your doctor about taking aspirin as a means to lower your hematocrit levels because the only way for mini aspirin to help in lowering your hematocrit level is when it causes gastrointestinal bleeding. Aspirin is an anti-platelet drug.  Platelets help a lot when it comes to clotting in the event of an injury. When you take mini aspirin as a means to lower your hematocrit level, know that it can thin out your blood completely which can result to your blood's inability to clot, lightheadedness and other neurological deficits. Areas with high elevation have a lower oxygen concentration than areas with lower elevation. An area of more than 8,000 feet (2,438.4 m) above sea level is considered to have ”thinner oxygen." People living in these areas generally have high hematocrit. Moving to a lower altitude residence will help return your hematocrit count to normal. As an adaptation to the environment, the bone marrow which is responsible of producing RBCs produces more RBCs to compensate for the low oxygen level of the body and as a result, there is a high concentration level of hematocrit in the body. . Nicotine in cigarettes and other tobacco products impairs the blood circulation by altering the oxygen carrying capacity of your red blood cells. The body compensates for the problem of having low oxygen levels by having the bone marrow produce more RBCs, thus increasing the level of hematocrit in your body. Stopping smoking or consuming any other tobacco product will help lower your hematocrit level. Quitting smoking is also best for your heart, lungs, skin, hair, and your entire body. Aside from that, it's also better for those around you. If doing it for your hematocrit isn't enough, do it for these reasons. Elevated hematocrit levels may be related to a different disease entirely, namely variations in cancer and a potential tumor. Tumors and cancer – especially in the bone marrow – create an uncontrolled production of blood cells. Do not jump to any conclusions if you have a high hematocrit count. Consulting your doctor is the best way to know how to reduce your hematocrit level effectively and the only way to know why your hematocrit level is high.
Summary: Exercise in moderation. Donate blood. Take mini aspirin. Stick to lower ground. Stop smoking Treat the underlying cause.

In one sentence, describe what the following article is about: This doesn't just apply to saltwater adventures, but to fresh water outings as well.  If you have an older motor or one based  upon an older design, you should buy a set of flushing "earmuffs": two flexible rubber seals attached to a metal clamp. One side can be attached to a garden hose, while the other is solid and will serve to plug a water intake. Slip the apparatus onto the lower unit where the water is taken in and then attach the earmuff to a garden hose. If there are additional water intakes that are not covered by the earmuffs, use duct tape to cover them.  Attach a garden hose to the earmuffs or mount and turn the water on. Newer motor designs already have mounts, and so the earmuffs are unnecessary. Start up the engine. The water pump will then flush out the system. (Practice safe boating and remember to stay clear of the prop and keep the motor out of gear.) Carefully put your finger through the stream of water exiting the motor. It should be warm, but not hot. If the output is not strong, you may have some debris stuck in the outflow tube. Immediately shut down the engine to prevent overheating and damage. If the flow tube is obstructed, insert a small piece of wire into the tube and work it back and forth (again, while the engine remains off). Start the engine again and check the output. If that doesn't solve the problem, you may need a new water pump impeller. Disconnect the fuel line if the boat is going to be stored for an extended period of time. You should allow the engine to burn the small amount of fuel that is in the carburetor. Old fuel can gum up an engine, and the best way to keep the motor running at a high level is to burn off all fuel remaining in the mechanism. Be advised that if you own a two-stroke motor with more than one carburetor, the top carburetor will run dry first while all of the cylinders will continue to run.  Without fuel, the top cylinder will not be getting any lubrication. Listen closely as the engine may get louder as the top cylinder begins to overheat. Also beware of any burning smell that is unusual for your engine. Just to make sure that all the moving parts are going to stay put for the next few minutes of cleaning. There should be no water or other liquids moving freely about the engine compartment. If you find leaks, consult a boating mechanic. Some of the best options are lubricants such as WD-40 or Quick-lube. Be sure to lubricate or grease all the moving parts such as the pivots, shift mechanism, throttle cables, carburetor valves, etc. Clean it off, and then cover the whole motor in a canvas or plastic covering for the duration of storage.
Summary:
Flush out the engine at home after every outing. While flushing the motor, check the water pump to make sure it has good water flow. After flushing the engine, disconnect the fuel line (if applicable). Be sure to turn off the key and, if you have a battery switch, turn it off. Take the engine cowling off and check for fuel or water leaks. Wipe down and spray all accessible mechanical components and moving parts with an anti-corrosive. Place the cowling back onto its fittings.