Gently squeeze the buttocks. Lift the belly. Keep the hips in line with the body and be aware of any sinking. Look forward about 45 degrees. Every part of the body is solid, light and connected.
Beginners can start with their knees on the floor or on padding.
In the accompanying video clip for this column, I'm performing Western style push-ups in which I inhale while lowering my body and exhale while rising. The elbows should bend in toward the body alongside the ribcage. If you're doing this for the first time, lower less than halfway down. As you get stronger your range will improve. Never land on the ground.