Does sugar hurt your capacity to focus on a chess-game?

I almost never eat sugar... except for a week ago when I bought a tub of ice cream. Almost immediately I went on a vicious cold-streak.

I could not focus. I could not concentrate. I could not visualize.

I could not stop my brain from looping shallow variations over and over again, instead of looking deep into a position.

Anyone else noticing similar effects?

I think you went on a cold streak because the ice cream was too cold. Try putting it in the fridge instead of the freezer and try again.

Not every spurious correlation has to be investigated.

@HowDoesTheHorsieMove LOL OK that's funny. I wish I could swap your ELO with Sargon. You deserve it more. Further proof that ELO doesn't necessarily correlate with intellect, character, or class.

@Sarg0n Labeling my reasons for asking as being "spurious", is illiterate at best, and pompously-presumptuous at worst.

"I don't know what your reasons are for asking, but I'm such a genius that I already know that it's 'spurious'."

Look here, you simple little guy...the science is already clear on the matter.

It's not a question of "if", it's a question of the extent; further, it's a question of "which kinds of people would be more/less affected."

Now if you could let me know how to mute people, Sargon, that would be fantastic.

I have found nothing that you've said to me, ever, to be value-added in the slightest way.

Also! Jetzt selbst bitte verloren, und lass mich bitte sein...Esel.

:) :) :)

There are other reasons that caused you to lose focus in the game.
The reasons can include:
1. The place is too hot or too cold;
2. The place is too dark or too bright;
3. The place is too noisy or too quiet;
4. You were tired because you did not get enough sleep, ran to the game to avoid to be late;
5. Your opponent annoyed you;
6. Your pen did not write well enough;
7. The clock did not work properly;
8. The chess pieces were damaged;
9. The board was damaged;
10. The place was too dirty;
11. The place was too crowded and you did not have enough space around you;
12. You ate bad testing food before the game and had stomach ache.
13. You ate and / or drank something too cold and had sore throat;
14. You are and / or drank something too hot and got burns on your mouth, tongue, and / or lips.
15. Your girlfriend broke up with you right before the game;
16. You failed an exam at school right before the game;
17. You read some annoying forum posts right before the game.

I am out and point to

http://tylervigen.com/page?page=1

The most important factor is how familiar you are with the positions which happened in the game. Your opponent was probably too strong for you. Losses show your defects and let you know where you need improvement.
The worst reasons to lose include:
1. Your cellphone rings during the game;
2. Touch move rule: you touch a wrong piece or move to an unintended square;
3. You forget to press the clock and lose on time as a result.

Yes, sugar has no nutritional value and increases your resistance to insulin, and also causes your body to have to process a much more "new" molecule to the human diet, sucrose, which requires more effort and has been documented to cause decreased mental ability, along with carbohydrates and starch.

The brain prefers a balanced diet (as does the rest of your body) and refined sugars are bad for you in general. Especially in the amounts per person consumed in the West.

If you're not used to eating sugar, of course a sudden intake may end eg. in sugar rush, fatigue, brain fog. Avoid fast carbs when not specifically needed (such as after exercise maybe).