Kate Middleton has little-known hobby that she does in the dark - but William thinks she's 'crazy'

ok.co.uk:

Princess Kate has a 'crazy' hobby that Prince William just cannot get his head around. The Princess of Wales, who is currently receiving chemotherapy after receiving a cancer diagnosis, once opened up about her fascinating pastime during an appearance on Mike Tindall's podcast, The Good, The Bad and The Rugby.

Catherine gushed about her love of sports, as she mentioned one particular activity that William calls her ‘crazy’ for. Despite the future King's thoughts on the adventurous hobby, the Princess revealed she 'loves it' so much she's willing to do it in the dark and cold.

She told Mike, married to Zara Tindall since 2011: "I can always remember being physical, using our bodies, whether it's walking, climbing the Lake District, in Scotland [or] swimming from a young age. [My parents] always encouraged us to be physically active and sporty, and they always encouraged us into doing team sports and trying things." She then shared her love of cold water swimming, which sees the Princess enjoy a chilly dip in the great outdoors.

Kate enthused: "Cold swimming - the colder, the better. I absolutely love it. Slightly to the point where William's [saying] 'You're crazy' and it's dark and it's raining.