One of the most fundamental exercises on earth. Treat the push-up with respect, and it’ll be a friend for life :)
Come to plank position. Engage the abdominals and pull the shoulder blades down your back. Your head should be aligned with your spine. Your feet are together.
Inhale and slowly bend the elbows, lowering your body toward the floor. Keep the torso engaged and the head aligned with your spine. Do not allow your lower back or ribcage to sag or your hips to hike upward.
To maintain stability also, engage your butt (glutes) and thigh (quadriceps) muscles. Try to lower yourself until your chest or chin touch the mat or floor.
Exhale and press upward through your arms, straightening the elbows. Imagine pushing the floor away from you.