Your body is constantly adapting to what you repeatedly ask from it.

Adaptation is always running. Sit for most of your days and the body becomes better at sitting and worse at everything else. Ask for strength regularly and it supplies strength. There is no neutral setting where nothing changes, which means every ordinary week is a request you are making, whether you meant to make it or not.

Ask what your typical week is currently requesting. Then add one small demand you would like to be met in five years. The body will answer whichever question you keep asking.