I managed to get a hold of this endearing Japanese animation after hearing how good it was. It was warned that this is no Saturday afternoon cartoon with a happy ending and i was ready to face it through. Watching it, emotions did varied with dramatic situations but throughout the film, it didn't manage to really thug my heart as much as i thought i wanted it to.

I was wrong.

As soon as the credit rolled, i couldn't help but swell up and cried my eyes out. Even till now, it never fails to glaze my eyes up at a mere thought of the images from the film.

..that too much O2 (Oxygen) is bad for your health?

Blame it on evolution but your body only has CO2 (Carbon Dioxide) receptors in it, so it cant detect O2. CO2 is used up by cells and is transported in your blood by Haemoglobin (Red blood cells) and exhaled. Breathing in O2 means your body can't detect it. Kinda of silly but its true. So too much O2 suffocates your body because you don't need to breath anymore.

To show yourself how weird your body is, take like 15 really big deep breaths slowly in and out. You go light headed, too much O2. ( Do stop if you feel a limit). And if you hold your breath after that, you'll be surprise that you can stop breathing for quite some time.