The big day is almost here.  In less than 2 days time, I will be cycling  450 km ( 60 miles a day) over five days through the  Beijing province of China. I've decided to undertake this challenge, on a personal and symbolic level, to mark my 44th year and to raise money to support research into the prevention of infertility and miscarriage. This cause, as many of you know, is very close to my heart. Robert Winston's fundraising charity (Institute of Obstetrics and Gynaecology Trust) strives to preserve the health of families and their babies who face devastating problems including cancer, premature birth and  brain injury.