An insurance policy with no guarantee - the complex issue of egg freezing in sport

"I remember waking up in the morning and I couldn't stand. I was bent over in two. I could barely walk." For Geva Mentor - England netball's most decorated player - this was the reality of going through the process of having her eggs frozen in 2019. "I had just played in my fourth World Cup and I was at a bit of a loss in terms of where my life was going personally, as I always wanted a family," Mentor tells BBC Sport.