Start a push up by lying down on the ground placing your hands flat on the floor a little wider than shoulder width apart. Keep your legs straight and feet together. Raise chin up so that you are looking straight ahead and then push your body up off the floor using your arms for strength.
It's important to prevent your upper and lower back from rounding or bending as your motion is going up. Pause and hold for 2 seconds in upward position. Then lower your body to the floor until your chest touches and hold for 2 more seconds. You should be inhaling while releasing down and exhaling when raising up body. Repeat.
Tip: It's extremely important to keep you arms and body straight throughout this entire exercise. Keep your knees from hitting the floor and always be looking forward while keeping your chin up.