Britney Spears switches up her dances to stop her workouts getting ''stagnant''.

The 'Toxic' hitmaker prefers to create her own routines from time to time as it ''amazes'' her to see how ''different her body looks and feels'' when she does.

She wrote on Instagram: ''It always amazes me how different your body looks and feels when learning new moves and creating your own routines! Doing the same things while working out can get pretty stagnant, which is why I love dancing! Had so much fun working on this combo with @mikeypesante! (sic)''

Meanwhile, Britney previously revealed her performances are an ''escape'' from her self-confidence issues.

She shared: ''I think it's an escape because honestly with how shy I really am, I don't think it's healthy. Performing is a boost to my confidence. It's like an alter-ego type thing. Something clicks and I go and turn into this different person. I think it's kind of a gift to be able to do that ... I'm very sensitive and sometimes I just want to run away because I'm a very shy person. I think energy is contagious and when I get onstage with the dancers, we all kind of vibe off each other. We feel the same energy and we connect. I think it's healthy to be able to put on the persona of being confident.''

And te 36-year-old singer has made the conscious decision to give herself more breaks in the hope it will help reduce her anxiety and improve her mental health.

She added: ''I think I had to give myself more breaks through my career and take responsibility for my mental health. There were many decisions that were made for me and that I didn't make myself ... I think I was a different person then, young, and I did not always know instinctively what was good and what was wrong. I am in a much better place in my life, and the two children shaped my personality, filled me, made me less worried about what is happening to me.''