"I'm the last to go to bed and the first to wake in the morning" — 9 women on the gender sleep gap and why they're tired all the time

The images of 6 women, who have shared their stories about the gender sleep gap, put together in a collage.

The gender sleep gap means women are struggling to sleep. Be it period insomnia, menopause hot flushes or child-care responsibilities, social, domestic and professional factors mean women have less time for leisure and rest than men.

However, women's struggles with sleep often go unnoticed.