And this one simple thing is… to rest. Yep, as in laying down, closing your eyes and just let it be. You can even take a nap if you have time for and feel like it. Or you can lay down on the floor on the Savasana (Corpse) pose. All possible.
In any case you should rest. For at least 5 minutes right after Meditating. This seals your practice and make it more powerful, more efficient. This is when you let all the benefits from that particular practice sink in
Just give it a try and see for yourself.