When glucose availability is limited, to protect itself from excessive muscle loss, the body decreases its need for glucose by using as an alternative energy source?

The body has the ability to maintain balance or homeostasis and whenever there is something that depletes, the body also compensates. When the body does not have enough intake, this results in muscle loss. What the body does to prevent this is that, it uses an alternative energy source by using KETONES.

This is a time line from 685 to 978