I read somewhere that it is better to walk than run when you are trying to lose fat because fat needs oxygen to burn, & when you are running, you are out of breath, which means you aren't getting enough oxygen to burn the fat, and instead burn carbs. I don't know if that is true, but it made sense to me. However, I also read many places that muscle burns more calories at rest than fat does, so it is also good to focus on muscles. So, I guess I agree with nelie in that you should mix it up. Good luck to you!
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