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I do a lot of gym circuits; a bit like CrossFit or HIIT sessions, so just 20 seconds on, 10 seconds off. Circuits are a good fat-burner but they also work your heart and lungs.
I do a lot of gym circuits; a bit like CrossFit or HIIT sessions, so just 20 seconds on, 10 seconds off. Circuits are a good fat-burner but they also work your heart and lungs.
