Hummingbirds flap their wings a blistering 12 to 80 times per second (depending on the species) when in flight. This can generate quite a bit of extra body heat, which must be dissipated somehow to prevent the birds from overheating. Now scientists think they understand a bit more about how these tiny creatures regulate body temperature.
Back in the 1950’s, the US and the USSR conducted over 1,000 atmospheric nuclear tests. The rain and snow were laced with fission products like Strontium-90. So kids were warned never to drink rainwater or eat snowflakes.
On that note, do not eat icicles. Icicles form as liquid water crystallizes on pre-existing solid water. The water in liquid form has impurities picked up from running across the roof, but as the molecules of water assemble into place, the dissolved and suspended impurities largely keep flowing. This isn’t true 100% or in all weather conditions, but a crystal clear icicle will have less contaminents than the roof run off that formed it.
Sometimes it seems the only exercise options for pregnant women are easy swimming, gentle yoga, and walking carefully in a field of pillows. But if you’re not satisfied with those, you’re in luck: many activities are safer in pregnancy than bystanders and even your doctor may realize.
…There’s a tip in here for people who aren’t pregnant, too: if a pregnant woman is doing something you wouldn’t normally imagine a pregnant woman doing…chill out.
…Keeping up fitness, even if you’re slow and sluggish for the moment, helps you return next season: you’re only taking a few weeks or months off, instead of a year or more.
Oddly, iron deficiency wasn’t mentioned in the article. Pregnancy can make you anemic because you’re increasing your blood volume by almost 50% in a short time. Anemia will make you tired and short of breath. Standard blood tests will show if you need iron supplements, but it can take a while to get back to normal levels, and exercising during that time will be difficult to impossible, depending on how anemic you are. This may be why the fatigue hits so early in pregnancy – there are athletes who didn’t realize they were pregnant until they saw their performance declining.
If you said “idiot college students”, you’re drunk.
On average, 6 people died every day from alcohol poisoning in the US from 2010 to 2012. Alcohol poisoning is caused by drinking large quantities of alcohol in a short period of time. Very high levels of alcohol in the body can shutdown critical areas of the brain that control breathing, heart rate, and body temperature, resulting in death. Alcohol poisoning deaths affect people of all ages but are most common among middle-aged adults and men.
Myth: drinking alcohol warms your body and can be used to prevent hypothermia.
In fact, drinking alcohol helps lower the core temperature of your body. This myth likely got its start thanks to the fact that drinking alcoholic beverages will make you feel warmer as your blood/alcohol level rises.
…if you’re one of those people who gets flushed quickly when drinking even small amounts of alcohol, you’ll likely see your core temperature drop even faster than most when drinking in frigid environments.
Holding a body close to you, it’s easy to appreciate the warmth a human body can generate.
Humans are “warm-blooded” animals. We’re able to effectively maintain a stable internal temperature, even on cold mornings or hot afternoons. This thermo-regulation is a dynamic process that balances heat generation (through metabolism and muscle activity) and heat loss to the environment, in order to maintain core temperatures.