Take a broad stance at a distance where the ax will connect with the wood when your arms are extended. If right-handed, grip the haft near the head with your right hand and near the knob with your left. Using your shoulders, and swiveling at your hips, swing the ax in a smooth motion up and behind your right shoulder. Rotate your shoulders to bring the ax forward. The right hand should meet the left as your left wrist "breaks" to permit a strike of maximum force. At the strike, give the handle a little twist. This will prevent the ax from sticking in wet, tough wood, and it will "pop" ripe wood neatly in two.