After running a marathon, taking part in a cycle challenge or fundraising for a charity walk, how do you pick yourself up when the initial euphoria wears off? Runner, GP and author Dr Juliet McGrattan shares her experiences of post challenge blues and tells Gillian Russell how we can best overcome them. Mindfulness expert and writer Dr Danny Penman explains why we need to concentrate on our breathing and learn how to do it more effectively to help enhance our health and happiness. As the temperature and pollen count rise, Dr Dean Marshall - GP and hay fever sufferer - talks about the different types of hay fever allergies and explores how best to combat the symptoms, especially if you want to continue with your fitness outside..