If you are a fitness beginner then push ups can be difficult to start with, try this are exercise.Always use a pillow or cushion to support your knees whilst exercising.Directions for this exercise.1. Place hands on the chair shoulder width apart, lay parallel to the floor, and rest knees on soft surface. Form a straight line with your upper body, neck and head, keep this position throughout exercise.2. Lower your body towards the floor, maintain controlled movement bending your elbows.3. When you get 1-2 inches from chair straighten arms and return to starting position. Remember about breathing techniques when exercising, deep breath in on decline and deep breath out on incline.