As a protection mechanism, our brain often convinces us that we are capable of far less than we really are. This is a preservation instinct that is meant to protect your body from over-exertion and from burning through its precious fat-stores.
Our brain relies on its survival skills. It wants your body to expend as little energy as possible to save up for the day when your usual resources are not available.
If you know that muscles require energy (calories) to sustain themselves, you may already see the picture we’re trying to paint. If your body no longer needs to lift, push, or drag the heavy things, your brain starts to consider your muscles as liabilities instead of assets. They are using more energy than what your activities call for.
That is why, if you stop working out, your brain responds with “well, we don’t need these anymore!”
Now, don’t panic. Your muscles won’t completely atrophy as though you’d never seen a day of exercise. In fact, drastic muscle atrophy is really a sign of severe malnutrition, disease, injury, or certain disorders. With less use, your muscles will simply decrease in mass.
Let’s peer into the details of what really happens to your body when you stop working out.