among other things it shrinks your hippocampus, which is the memory center in the brain. it lowers that happy mood chemical, serotonin. it lowers this amazing thing called miracle grow for your brain called bdnf. this increases the connections between cells and actually stimulates the growth of new brain cells. so it's like fertilizer for your brain. and being stressed lowers this. it increases inflammation and it makes you fat. so, you have to realize that stress is actually the result of our thoughts, and thoughts can heal, or thoughts can harm. they literally alter your brain chemistry and physically reshape your brain, and not in a good way. the most powerful pharmacy in the world is right between your ears. you see, research shows us that stem cells, those cells that help us rebuild, renew and repair, and heal our body are supplied by a nerve called the vegas nerve, which is turned on when we relax. and when you relax, you stimulate those stem cells to make new cells. you can rebuild new brain cells and make a younger you by simply relaxing. i want to do an experimen