This is what poptarts are for, you can shove one in your mouth in a split second and still be playing your favorite game, plus they are really filling
but not to many, or j00 get to much weight.
To prevent it, have a bottle of water, or kool-aid, gatorade, whatever by you, take a drink every once in a while, and stretch a bit.
When I play Halo on the computer, the 10 second spawn wait is when I take a drink, shove some pop tart, or some grapes, apple bite, whatever and keep chugging ingame.
Personally, I suggest fruits, but not ones that need refrigerated, and carrots help a lot to, they fill pretty fast and aren't junk.
I get it when I wake up stand up after watching a movie to fast, and I've had it pretty bad.
I was a counselor at a camp, and some kid shot me with a BB gun while I was sleeping.
Shot up so fast I couldn't see where I was going, I got blood rush and nearly went into a fire.