Almost 40 percent of Japanese people sleep less than six hours a night.

Many Japanese people try to rest, well, whenever they can.

Some even sleep standing up.

I wake up at 5 a.m.

I'm supposed to work from 7 a.m. to 4 p.m. but in reality I often finish work around 7 p.m. 12 hours of work.

The regular working day should last eight hours in Japan, but many employees put in overtime and go home exhausted.

In response, some companies are marketing items to help improve sleeping habits.

Adjustable pillows and special pajamas priced at 157 euros.

This capsule hotel analyzes guests' sleep patterns for between 20 and 75 euros a night.

We spent a night there testing it out.

Based on the data, I'd say you're in excellent health.

This hotel has turned sleep into a business opportunity.

The number of guests has increased five-fold in three years.

We offer a service entirely focused on sleep.

We collect data on the quality of our clients' rest and provide it to them.

The sleep market here is worth nearly 40 million euros a year.

Proof that Japanese society, where sleep was long considered a sign of laziness, is changing.

I think it's good that Japanese society is becoming increasingly aware of the importance of sleep.

But our rest hours are still too short.

Japan's sleep technology market is expected to triple in size over the next two years, as its tired citizens strive to get their recommended eight hours a night.