What do very good players do to train?

I've been looking at top GMS profiles and most haven't touched the tactics trainer in months. What do they do to train?

Top GM don't need to practice basic tactics. It's like an engineer practicing basic algebra.

lol

There are always a few semi-pro to pro tournaments going on, and top GMs probably look at all (or most) of those games to stay current. So first of all they're probably looking at a few dozen games a day.

They also spend time researching openings, and building databases of games and variations on programs like chessbase.

Of course they'll give special attention to analyzing their own games, and games of their rivals.

I assume in the past they've done a lot of difficult studies... but with their memory for chess, and their years of work, I assume there aren't many studies in existence that are both new to them and difficult for them to solve.

At the top levels, physical conditioning is as important as mental conditioning.

Perhaps they train by intensively exercising their clock-pressing muscles?

Get "The Fine Art of Chess", the book that will make any chess player 500 elos stronger:

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Paperback will follow in a week or so.

I guess that makes sense. Hikaru, Ray Robson or "spicy caterpillar", and some IM whose name I forget as well several others all blitz through 2500-3000 rated puzzles like they were nothing in puzzle rush.

They have their own tools for tactics training.

Here's another one, from what I've heard just about any titled player from CM to GM and some highly rated untitled players can play blind fold games. Why can't they all see 40 moves deep like top GMs? I know they're not calculating 40 moves deep in blindfold games, but they are visualizing at least 40+ moves on the board.

Analysis is the key to it all.

The more you analyse, the stronger you will become.

Analysing a particular chess position, breaking down the different options, drawing logical conclusions, will give you 2-3 times as much next to playing random games, especially blitz.

Much better than tactics training, too.