Image source, Getty Images
Periods, low confidence and being watched by other people are factors preventing about a third of girls in England enjoying sport, a report says.
Data from the Youth Sport Trust shows over the last three years, periods have become the biggest concern for girls when doing PE in school.
A total of 37% said periods stopped them from getting active in school last year, up from 27% in 2018-19.
The charity is campaigning to give girls a greater say in PE in schools.
The charity's Girls Active programme empowers girls in schools to help each other and support teachers to remove barriers.
"We want to understand further from girls what would help make a positive difference to them during their periods, so they feel that physical activity is a space that supports and helps them", says Wendy Taylor, who runs the programme.
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The charity asked 27,867 school-aged girls in England about their biggest concerns about participating in PE and sport.
- 37% said their periods stopped them from getting active in school, (27% in 2018-19)
- 33% said they were not confident to get active in school (30% in 2018-19)
- 33% said other people watching them take part put them off (27% in 2018-19)
'A bit too exposed'Image source, Herne Bay High SchoolImage caption, Isabella, Abi, Julia and Skye, help girls embrace sport at their school in Kent
At Herne Bay High School in Kent, 28 pupils from different year groups have created a magazine called Sweat Bands and Fake Tans to deal with the taboos and concerns some girls have.
Skye, aged 16, says they are advising younger pupils with issues such as periods and low body confidence by making videos with suggestions on the best gym clothes and sports bras.
She says she's always struggled with body confidence, but that experience has helped her to have a positive influence on other girls.
"I think it's not feeling comfortable in your own body and feeling you're not good enough compared with everyone else, which I feel the media has not really helped," she said.
Image source, Herne Bay High SchoolImage caption, Skye has struggled with body confidence, but she's now helping other girls
Skye says she is lucky as her teachers have helped her embrace her periods but admits: "Obviously, just getting changed is an issue. Sometimes you just feel so awful and you just don't want to do it, even if it's something you really look forward to like netball or basketball.
"But I feel you just have to push through, because you will feel better in the end."
She knows many girls feel very uncomfortable with certain types of skimpy PE clothes.
"You just feel a bit too exposed. I feel like sometimes you just want to put on some baggy joggers or some leggings just so you feel more comfortable."
Abi loves doing sport now, but she used to feel she wasn't good enough.
She says, at the age of 14: "You just feel like because everyone is watching you, that everything you do is going to be noticed, whereas that's not actually how it is."
Image source, Herne Bay High SchoolImage caption, Abi loves sport but used to think she wasn't good enough
In contrast to girls, she says: "I think boys often come across as a bit more confident, whereas with girls, if you feel under-confident, then you're automatically going to hold back."
Like Skye, Abi believes the media has affected how girls think.
She says: "When you see people on Love Island and models, you think, maybe I should have to be like that. It puts such a negative on you to think, do I really have to look like that or can I just be me?"
Isabella says she also used to struggle with her confidence, but believes sport has helped her to overcome it, and is passionate about helping other girls through sport.
Image source, Herne Bay High SchoolImage caption, Isabella feels sport has made her more confident
She says: "I want to do my part and prove that being active can be fun and help overcome barriers. Over the years it has taught me various lessons that I will pass on to others we meet over the next couple of years at school."