Reddit mentions of Modern Reading Text in 4/4 For All Instruments

If I play a very simple syncopated beat like

1 + 2 + 3 + 4 + |1 + 2 + 3 + 4 + |1 + 2 + 3 + 4 + |1 + 2 + 3 + 4 +
X X X X |X X X X |X X X X |X X X X

So quarter notes essentially, but dragging the second pair an 8th behind the beat
When I do this, I literally feel an 'absence' on beats 3 and 4 - it has a lifting quality opposed to the downward feel of the sounded 'and's - If I were to vocalise this feeling, it'd sound like Un Un unKa unKa

It's this felt-absence that I then time the syncopated notes by - if I was strumming a guitar, I'd literally to a down-stroke that missed the strings to feel that hidden down beat, and then do a lifting stroke for the sounded off beats
There's a sense that I am actively playing the silent note in time on the beat
To emphasise this feeling, I might move my body (tap foot, nod head) - this is especially helpful for difficult peaces - if you watch radio head playing the infamously deceptive syncopation in video-tape you'll see them all bobbing their heads like they're children learning their first instrument - even virtuoso pianist thom yorke playing what sounds like quarter notes - it just helps root your brain

As to how to get this to happen; I can only tell you how I did it
There are syncopation study books - basically long sheet music that's just variations and permutations of rhythm - no note differentation
And I'd sit and 'play' through them with/without instrument, tapping the beat
Eventually you just get a feel for it