do not touch, the floor. Push ups. They are excellent for chest triceps, shoulders and core muscles. There are a few ways to do push ups, some more difficult than others depending on your level of fitness. A search for "push ups" online will deliver a number of excellent websites showing the proper techniques. Abdominal "Crunches". Also known as "sit ups". Lie on your back on the floor with your feel flat and your hands behind your head. Contract your abdominal muscles and raise your head first, then your neck, shoulders and upper back off the floor. Tuck your chin slightly. This is another exercise that can be done in many different ways. Bent-over Row. This exercise requires a piece of weight equipment to be most effective but it can be done with just about any weighted object. Stand with feet shoulder width apart, lean forward at the hips, contract the abdominal muscles and extend your spine. Hold weight(s) with your hands shoulder width apart. Bend your arms at the elbows and raise both hands up towards the side of your body. Hold momentarily, then lower your hands to the start.
By far the most difficult part of any exercise program