Sport Relief first time, on Friday 21 March. It was hosted by Gary Lineker, David Walliams, Davina McCall, Fearne Cotton, Jack Whitehall and Claudia Winkleman. The "Clash of the Titans" was hosted by Gabby Logan and Clare Balding. In January 2014, the BBC announced that the 2014 edition of its Sport Relief broadcast on 21 March 2014 would feature a new Only Fools and Horses sketch. During the three weeks before the telethon, "Sport Relief's Top Dog" aired on BBC Two with Gaby Roslin as host. The Sport Relief Mile was joined by three major cycling events (in London, Manchester and Glasgow)
Challenge point framework surgeons). The optimal challenge point represents the degree of functional task difficulty an individual of a specific skill level would need to optimize learning (Guadagnoli and Lee 2004). However, this learning depends on the amount of interpretable information. Therefore, although increases in task difficulty may increase learning potential, only so much is interpretable, and task performance is expected to decrease. Thus, an optimal challenge point exists when learning is maximized and detriment to performance in practice is minimized. With increased practice it is assumed that one's information-processing capabilities will increase (Marteniuk 1976). Therefore, the optimal challenge point will change as