as long as you are in low insulin mode.for fat burning, need to do body weight. cardio is good for heart
walking, cardio, body weight, weights, everything will work.
however for explosive exercises like weights....if you are in low glycogen and insulin mode.....and if your body is not used to burning fat....you will fatigue out too quickly before you can get a good pump in.
walking usually works best for fat loss as it gives your body more time to convert that fat into energy without you fatiguing out.
