Of course, there is scientific evidence for the benefits of pretty much everything – you just have to look hard enough for it. This is especially true of the folk wisdom that mothers and grandmothers like to pass down (fathers and grandfathers are less prominent here), which also has the advantage of being backed up in every way. The rule of conduct “After eating, you should rest – or take a thousand steps?” conveniently contains the opposites in the same sentence.
Going for a walk after eating: Why it is healthy for many people – Health
