You can push-ups anywhere, at home, in the park and even in your garden without the need for equipment. Although this exercise (also called iron or "lizards") is free, it is anything but easy. A flexion requires a tremendous force in the upper body and in the trunk. Without proper technique, exercise is not effective and could even cause injuries. Do your push-ups in front of a mirror to verify your technique, then change the position of your arms and hands to work different muscles.
The initial position for a bend is the basic table position. Align your wrists with your shoulders. Your toes should be slightly extended and your feet together. Your body should form a straight line from your head to the heels. Use your trunk muscles and bend your elbows to bring your chest to the floor. Use those muscles, those of your thighs and buttocks to prevent your body from bending. Push with your palms to return to the starting position.
Changing the emphasis
By changing the position of your arms, different muscles can work effectively. Taking your elbows to the sides places the effort on the chest muscles. To exercise the triceps, position your hands in such a way that your fingers point forward but keep your elbows close to your body.