The human body can go a few days without food and water, but the human body cannot go without oxygen for a full 3 minutes.

Oxygen is the single most important thing in order to operate and nourish the body throughout daily functions.

In fact, just minutes without oxygen can severely damage the heart, lungs, brain, and other immensely vital organs.

When the human body experiences a lack of oxygen you can be susceptible to the development of hypoxia or hypoxemia.

These two are often intertwined and hypoxia is regularly used to describe both problems. Hypoxemia is typically the cause of hypoxia, because the oxygen depleted blood doesn't have sufficient amounts of oxygen present to transport to your tissues, ineffectively keeping up with your bodies demands.

Summer time is often filled with outside activities and being a part of these activities is most enjoyable. You can still be a part of many outside activities, but there are a few points to remember.

First, you are dealing with sensitive electronic equipment and it needs to be cared for just as you care for your smartphone or that new laptop. Leaving such equipment out in the sun, near hot appliances or sources of water are big no-noes.

The delicate circuitry as well as the batteries can be quickly destroyed or compromised by such conditions.

While the techniques used have no resemblance to how oxygen therapy is done today, the importance of it was known back in the 1600s.

It came into favor and went out of favor over the years while undergoing a wide variety of implementation.

One in the 1900s was a gigantic hyperbaric chamber that included a dining area, smoker's lounge, as well as a bedroom!

This was not very portable that is for sure. Hyperbaric chambers still exist, but are used for much different reasons, such as wound healing and diving accidents known as the bends.