As a population we have generally become lazy. If a car will get us there, in the car we go. A good fitness tip is to forgo the wheels and go on foot. Perhaps you need to go to the gas station a half mile away for milk, then you should walk. Another good idea is to park farther away at places like the grocery store, and force yourself to walk a few yards. This will get a little bit of exercise in where before there was none.
A great way to get fit is to perform reps in the ten to twelve range when you are lifting weights. You might not be able to lift as much weight, but your muscles will become more toned. The amount of reps you do is very important in getting fit.
Run at least four times per week. A consistent running routine increases endurance because your muscles train themselves to perform repetitive motions more efficiently. Running every other day is adequate to build this muscle memory. A run can be of any length, and beginners should start with runs no longer than 10-15 minutes.