Matt Baker and Gabby Logan are joined by Sarah Parish, one of the stars of new sitcom W1A, and comedian Ade Edmondson.
Alex Riley examines the effects of high caffeine energy drinks on children and Matt Allright looks at caffeine levels in daily cups of coffee.
Plus, can Alex keep her energy levels up as she gets over day one of her 12,000 ft climb up Moonlight Buttress in Utah in aid of Sport Relief.