Posts tagged oxygen
Breathe out, breathe in

When we are stressed and we need to calm down, we are often told to breathe in and breathe out. But it is actually the other way around: we first breathe out and then we breathe in. Just like all other aerobic creatures, we need oxygen to break down foods for energy and we produce carbon dioxide as a waste product that we exhale. And it’s important to exhale completely.

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Real vs fake Christmas trees

As Christmas is coming closer you might be asking yourself which is a better option in terms of the impact on the environment: a real Christmas tree or a fake one? To be able to answer this question, there are a number of factors that need to be considered, such as how far the tree has traveled, how much energy went into producing it and how it is recycled.

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