Why don't we dream sometimes?

It seems like we don't dream every time we sleep. We wake up and we don't remember anything, so we assume that we weren't dreaming at all. But is it true that we just don't have dreams sometimes? Why is that?

The answer is quite surprising as everyone dreams every night or even a couple of times during the sleep. The large part of the dreams comes from the fourth phase of sleep, the REM phase that repeats every 90 minutes. The problem is that some remember more than others. Certain people are able to describe their dreams with all the details while the others don't remember anything. The easiest way to explain it is to understand what one of the scientists has claimed: "the sleeping brain is not capable of memorizing new information; it needs to awaken to be able to do that". If you often wake up during your sleep, you probably remember a lot of your dreams. If not, there's nothing to be worry about. It just shows that you are a heavy sleeper, and that's not a bad thing at all.

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Why does bread usually fall buttered side down?

This morning, when I was preparing my breakfast, it happened again: my sandwich fell to the floor, buttered side down. Maybe it's just a coincidence, or I have a permanent bad luck, but it happens to me every single time when I accidentally drop my sandwich. In fact, there is a scientific explanation, why does bread usually fall buttered side down. There's even a site on Wikipedia dedicated to Buttered toast phenomenon . Let's just say, without mentioning unnecessary law of physics, that when you hold a toast or when you put it on the kitchen table, it is at the perfect level to rotate and land the buttered side on the floor. If you want to avoid it, there are some rules you can follow. You can cut the bread into smaller slices, or you can try to elevate the surface that you are working on , which will probably change the number of rotations and hopefully make the bread land on the desirable side. The shape of the slice is also important- if you make it a...

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You're preparing a family dinner: no meat and no onion for mum, but a lot of meat and a lot of onions for dad instead. Your brother is a seafood lover while your fianc é won't take a bite of anything that lives in the sea. Too complicated? Try to remember who likes olives, blue cheese, mushrooms and brussels sprout and who hates it, only to get to know that it's completely not true, because in the last few weeks everything has changed. Why do we like foods that we used to hate before? The main reason is, our taste buds regenerate. The scientists claim, it happens every two or three weeks until we celebrate our 40th birthday. Then the whole process slow down, and we don't notice the changes anymore.

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