It so happens that the best way to do this is by having
a powerful aerobic system, which has to be trained to stay healthy.
But if you develop
a powerful aerobic system, sugar goes to the brain, and fats go to the muscles.
That happens because aerobic development necessitates much greater insulin sensitivity, which means that higher amounts of sugar can quickly leave your bloodstream (and furthermore, with a more
powerful aerobic system you have the machinery to utilize those greater amounts of sugar).
But since the two - week test cuts back so drastically on your carbs, it's very difficult to stay running at the same heart rate without a very
powerful aerobic system.
(What should stop me from overtraining is
a powerful aerobic system, combined with a proper amount of rest).
Basically, it's because you have a very
powerful aerobic system, relative to your maximum muscle power.
It's rare that people with
powerful aerobic systems gain weight quickly.
Not exact matches
Weight training alone can increase muscular strength and your basic metabolic rate, while
aerobic workouts fortify your cardiovascular
system, so it's no wonder that combining both in one workout is the most
powerful approach to fat burning.
So, the way to reduce effort is to increase your maximum muscle power, so that your
aerobic system becomes slightly less
powerful relative to your maximum muscle power.
Although the correct diet doesn't make the
aerobic system more
powerful, it does make it more active within its present abilities, meaning that you make it relatively more trainable.
It's not the case that this is necessary for absolutely everyone, but rather that it is a way to be pretty sure that your
aerobic system is
powerful enough to tolerate some anaerobic training and racing.
-- One
powerful way to correct muscle problems is by developing a great
aerobic system.
Training like this, the
aerobic system never develops (to be as
powerful) and the body never learns how to extract fat from adipose tissue at a high rate (and convert that fat to sugar), and so those fats become «stranded assets» even for the marathoner: for all intents and purposes, the body can't get to them (at the rate needed) because the machinery necessary to extract them was never developed to that extent.
That heart rate spike is a direct indicator that your
aerobic system isn't
powerful enough to drive the cooling
system, meaning that your body is using anaerobic energy channels to be able to sweat at the rate it needs to.
And this is perhaps one of the most important side - effects of
aerobic training: that you'll be able to keep a very high level of athletic output at a low heart rate because of the fact that when your body is burning mostly fats, its fat - supply / fat - burning
systems are
powerful enough that even near - exclusive fat - burning (with very little sugar) means that you have a lot of energy.
Two things will help you: sugar, or developing a
powerful enough fat - burning
aerobic system.
So, when your
aerobic system isn's sufficiently
powerful to recover from the workout, you see your hrr suffer.