4 Min Read LONDON, April 14 (Reuters) - With 100 days to go until the Tokyo Olympics, British taekwondo athlete Lutalo Muhammad is determined to make every second count. That has become his mantra since the 2016 Rio de Janeiro Games when he had gold in his grasp only to lose it after taking a devastating kick to the head in the final second while leading. As Cheick Sallah Cisse sprinted off the mat in joyous celebration at Ivory Coast’s first ever gold, a stunned and disbelieving Muhammad was left sobbing in the arms of his father. The 29-year-old Briton, who has moved up a weight division from his previous -80kg but whose ticket to Tokyo has yet to be confirmed, will not be making that mistake again.