Yes, blitz does help you improve in time trouble situations but not as much otherwise as rapid and standard
Not really, knowledge helps you improve in time trouble. Ofc you will gain a minimal increase from playing blitz but it's a really bad way to improve.
), a firm background in openings, middlegame, endgame. Apparently his coach used blitz for the sole purpose to help Fischer with time management, not with his playing strength. Once I am good enough to beat nearly anyone but lose occasionally on time, I'll start playing blitz. The measure of World Champion is in slow, OTB chess in which both sides attempt to find the best move with careful analysis.
Yes, blitz does help you improve in time trouble situations but not as much otherwise as rapid and standard