The reason that our bodies do this, as opposed to making all muscles strong all the time, is to avoid wasting energy on muscles you aren't using. It is basically using what muscles were used recently as a heuristic for which muscles need to be strong to ensure survival.
The reason that our bodies do this, as opposed to making all muscles strong all the time, is to avoid wasting energy on muscles you aren't using. It is basically using what muscles were used recently as a heuristic for which muscles need to be strong to ensure survival.