This morning, I went to 7-Eleven to pick up some groceries for breakfast, and spotted a few cans of oxygen in the clearance bin. They had already been marked down from 600 yen to 400 yen, and were on clearance for 200 yen. Apparently this was just another wacky Japanese fad, despite all the buzz around it three years ago.
I bought a 200 yen can and tried it. It didn’t do too much for me, despite being coffee-scented. Any positive effect of the stuff probably comes from the fact that you have to deliberately inhale in order to enjoy the burst of stinky O2. Perhaps all the salarymen need to do is take a deep breath once in a while.