Why Does 30 Minutes Prove So Beneficial?
Your body has only three possible energy systems. Two of them are oxygen-INDEPENDENT. Yet, in order to metabolize fat, your body demands that oxygen be present. Long-story-short: brief, especially “quick” exercise bouts look for quick energy sources. These reside in blood and in muscle. It takes more than a few minutes to significantly tap into your fat stores, and especially, to burn enough of it for a long enough time to lose some substantial body weight.
This is almost the exact opposite of muscle tissue, where you can see and feel virtually immediate results. Burning fat requires patience. You simply have to allow yourself TIME to let exercise effects occur.