The Carl Lewis Challenge

Your knee rests on the hard surface of the track. Fingers splayed, you adjust your foot slightly on its starting block. A bead of sweat squeezes from your brow as you focus on the race ahead. Weeks of intensive training have culminated in your anticipation of the starter's gun, poised to put everything you've got into the next few seconds. 100 meters suddenly seems a very long way... Take the Carl...