You probably know that, in the past, Lena Dunham has been super vocal about loving her body.
She's also spoken openly about using exercise as a way to combat issues with her mental and physical health.
She explained her reasons for beginning to exercise in a 2015 interview with ESPN:
When you exercise, there is a natural calm that comes from knowing that you did something with your body that day. Actually going and working out makes everything else easier and better ... I have endometriosis, which has been chronic for me and at times very painful. I've also had mental health issues. I value my health and my happiness. And I've realized exercise can give me both of those things.