United Kingdom, Aug. 25 -- Frankie Bridge is struggling with her mental health and has felt like "a worthless waste of space".

The former Saturdays singer has always been candid about her battle with depression and anxiety, and over the weekend, she revealed she spent most of her time "psyching" herself up to get up and about and do some exercise to help relive the stress.

She penned on her Instagram Stories: "Sometimes this is what depression looks like.

"Sitting on the sofa all day in your pjs. Then being so fundamentally fed up of your own s***, you finally find the strength to make it to the gym.

"Quick shower and back to the sofa and pjs. Better than nothing."

In another post of her on an exercise machine, she penned: "Spent a l...