test. reporter: why would anyone want to walk outside in the bitter cold like this? we re doing it in the name of weight loss. we re going to get sick. reporter: we re trying thermal dieting. a new understanding of how cool temperatures can melt pounds. we are below freezing now, we can certainly feel it. what does that mean for us? how many extra calories are we burning because of this cold weather? we re burning at least 50% more calories. reporter: seem too good to be true? author tim ferriss says the body has to work overtime to overcome the cold. the body wants to maintain a balance. a homeostasis. if you make it cold it will do everything it can to get to 98.6. and it has to burn calories to do that. heat equals calories. what is going on in your body? there s actually a type of fat called brown adipose tissue, b.a.t. cold can trigger this b.a.t.,
andrea canning put it to the test. reporter: why would anyone want to walk outside in the bitter cold like this? we re doing it in the name of weight loss. we re going to get sick. reporter: we re trying thermal dieting. a new understanding of how cool temperatures can melt pounds. we are below freezing now, we can certainly feel it. what does that mean for us? how many extra calories are we burning because of this cold weather? we re burning at least 50% more calories. reporter: seem too good to be true? author tim ferriss says the body has to work overtime to overcome the cold. the body wants to maintain a balance. a homeostasis. if you make it cold it will do everything it can to get to 98.6. and it has to burn calories to do that. heat equals calories. what is going on in your
once and for all. but this congress may not have the votes, shep. in the next congress it s going to be a lot more difficult. shepard: jen griffin live at the pentagon tonight. thank you. we learned of potential trouble with a lot of children s over-the-counter medicines. new study in the journal of the american medical association reports the majority of kids liquid medicines have dosing inconsistencies between the directions on the package and the markings on the included measuring device. and if parents get confused, they could end up giving their kids too much or too little medicine. jonathan serrie with the news from our southeast newsroom tonight. jonathan, exactly what problems have the researchers found here. 26% of the products tested came without measuring devices. even those that included a measuring cup like this one or a syringe, the researchers found in 98.6% of the case, there were still problems such as devices missing the proper markings or
technology in the form of a very small pill. each season the texas longhorns face bitter rivals like the sooners or aggies. but an even tough eer foe is th intense texas heat. i don t think i ve ever gotten used to this heat. the best way i ve been able to adjust to it is drink moorgater raids or waters. hydration, it is one method u.t. trainer kenny boyd stresses but he also employs high-tech methods like the core temp pill. wow. the pill is ingested about six hours before training begins. so that s what i did before my longhorn workout. all right. let s play ball. the heat index, 105 degrees. a quick warm-up run, then a body temp reading before practice starts. got to be a cool 98.6. 98.6. try 100.23. reporter: kenny will pull a
humid that it becomes difficult for mammals to survive. this will take place over time, so that s interesting. two ways to think about it, humans knowing it s coming could theoretically over time, over decades, move to places that are going to be inhabited. but what s the rest of the effect? you mentioned mammals. how does this change our world and landscape if it happens? that s one of the important parts of this study is by looking at wet bulb temperature, which is a fundamental thermodynamic variable, we actually are focusing on something that applies really to all warm-blooded mammals. so, we all have internal temperatures of around 98.6 and this thermal limit is really based on our internal body temperatures and our ability to lose heat to our environment. so, if the outside temperatures become so hot and so humid that we can t dissipate the heat that we generate internally through our metabolism, then we essentially develop a fever and