00:00Millions of Americans are doing everything right at the gym and seeing almost no results on the scale.
00:06And according to a growing body of research, the reason has nothing to do with effort.
00:11And everything to do with biology, most doctors are not explaining.
00:15The first issue is cortisol.
00:17Intense exercise, especially cardio, spikes cortisol,
00:21which under chronic stress conditions can actually instruct the body to store fat rather than burn it.
00:27The second is insulin resistance.
00:30A condition now affecting one in three Americans,
00:33which blocks the body's ability to efficiently burn stored fat, regardless of caloric deficit.
00:39The third is sleep quality.
00:41Without deep slow-wave sleep, the hormones that regulate hunger and metabolism cannot reset.
00:47And perhaps most surprisingly, research shows that the body adapts to exercise routines within six to eight weeks,
00:56dramatically reducing the calorie burn from workouts that felt hard when you started.
01:01Changing it is the fix.
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