A way that being out of shape and unhealthy can cause illness, is when you don't eat right and work out then your arteries will get clogged and you would need bye-pass surgery. And bye-pass surgery can be very dangerous, so you wouldn't want to rely on it.  Even though clogged arteries aren't considered a disease, it is very similar to one because it can be deadly.

There are definitely many reasons for why you should stay in shape; But what are some things to do to stay fit.  And even better, what are some foods to eat to stay healthy.  Now there are thousand and thousands of ways to eat right and stay in shape.  But fortunately there are a few main ones.

Now working out is not the easiest thing to daily.  But it is necessary to do it almost every day.  The longer that you slack off, the more you are going to be out of shape. Your body requires that almost daily basis of workout once it gets used to it.  If you don't work out almost every day after your body is used to it, then it will feel very tired and uncomfortable when you don't work out. Even though you may not realize that your body feels better after working out, it still does.  This is because it works most of the muscles in your body, instead of them just sitting there.

An activity that you can do to keep your heart, arteries, and veins in shape is to go jogging. This gets your heart pumping more blood than usual, so this means that it is working harder than usual.  If you jog at least a few times a week, then you will notice that when you do simple little tasks like climbing up a few flights of stairs that it will no longer make you tired.  You will also be able to run while playing sports easier (such as basketball).  And doesn't everyone just hate getting those awful cramps around the gut?  Well jog regularly will help reduce or even eliminate these cramps.  So you could say that jogging helps not only you heart, but your abdomen muscles too. It also helps your thigh muscles strengthen up.  Which could help increase your vertical.