youtube subtitles Will you be so kind as to check if I correctly transcribed a video on this link http://www.youtube.com/watch?v=VhfOC-mYM7s I'm gona show you guys in this magic wall animation what can happen to you. You may remember last year I actually went on a project "unhealthy". In five days I gained eight pounds. In five days I actually became hypertensive, developed high blood pressure. I don't even want to know what was going on inside my body. America listen up! This is what you're doing to yourself I did it for five days I felt miserable, I gained weight. I put my body in jeopardy and it wasn't worth it. You know what? I'm never going to do it again. Why did I do it? To prove a point: when you eat these foods it causes an addictive pattern in your mind. But in the end all you end up is overweight, lethargic and not feeling good about yourself. This is me. So, what happened when I ate a fast food meal? well something very simple. The contents enter your stomach. And I'm gona circle some of the contents that I call some of the killer contents in food. Sodium. These are fat molecules. These are refined sugar molecules. No big deal, right? Well it is a big deal because when they hit your stomach, good things start happening, believe it or not. That's that dopamine release in your brain because dopamine and serotonin are going wild. You feel great: "Oh, my gosh this tastes wonderful". It does, right, for the first few minutes. But things are also going on inside your body that aren't so great. Your pancreas is secreting more and more insulin to deal with that massive sugar overload from the fries, from the white bun, from the soda. Insulin does one thing - it drives sugar into cells. But it does something else - it tells your body to store fat. Why else would you eat a meal that big, and that many calories unless you are about to go into hibernation? That's what you do when you hibernate - you grow a big belly. That (that) fat that you see here those fat cells actually grow in size. They start to secrete even more toxic substances leading to heart disease, diabetes and so many other things. All that sodium causes your blood pressure go up, so your heart's beating twice as fast against twice as much resistance. And in your brain you are no longer releasing dopamine but instead your brain is signaling you to release cortisol. Cortisol is a chronic stress hormone.

learning curve David (http://www.italki.com/user/1620170) made a comment on a guy's stay in Irkutsk, Russia (http://www.italki.com/discussion/83107). In his comment he wrote "A tough learning curve for a guy from the tropics!". The first thing that comes to mind is that he had a tough LESSON, having to come back on foot after missing his stop on the bus. But just then my memory rises the idea of memory curve, which is in a shape of some hyperbola, if I am not mistaken, and represents the dependence of memorised material on the amount of time passed after memorising. Could this be the learning curve? Is it a set expression in English?