These Heavy Black Bones by Rebecca Achieng Ajulu-Bushell

This is not a story about making history. Rebecca Achieng Ajulu-Bushell was once a double British Champion and the first Black woman ever to swim for Great Britain. As her body and mind are sharpened through gruelling training, press scrutiny and the harshness of adolescence, Rebecca charts her career's ascent and her singular love of the water, before explaining why she walked away from it all.
A compulsive and unforgettable study of intensity, These Heavy Black Bones meditates on Blackness, identity and the ecstasy of peak physical performance, and lays bare the pressures within the swimming world.