The objective of this study is to assess the effectiveness of naps under different environmental conditions and a rest without nap, on driving, alertness and psychomotor performance.

This study also aims to record during nap time, sleep, body temperature and heart rate.

Nap time is one of the most effective means of combating decreased alertness throughout the day and maintaining cognitive and psychomotor performance.

As such, it is recommended for long-haul drivers driving their vehicle. However, these drivers have no alternative but to sleep in their seats. These conditions are not optimal for producing quality sleep. The motorcyclist, for his part, has no chance of sleeping without finding a place to feel safe to give himself up to sleep. On these bases, SOMBOX has developed a mini-hotel allowing drivers to find an optimized place to take a nap.

Investigators propose an experimental study to evaluate the effectiveness, on simulator driving performance and on the results obtained during cognitive and motor testing, of a nap taken under three different conditions. The effect of the nap will be assessed by comparison to a rest awake.

This study should include healthy volunteer participants.

Inclusion Criteria:

• -Male and female participants, aged 20 to 50 years in good health, good sleepers (>8h on average), not being extreme chronotypes, without sleep disorders, healthy, unmedicated, not working in shift work, having been licensed for at least 2 years and driving a minimum of 5000 km per year
• The need for the collection of the signature of informed consent
• The need to be affiliated with the social security system
• The need to understand French

Exclusion Criteria:

• participant with a sleep disorder, even if not medicated
• participant with extreme morning or evening chronotype
• pregnancy
• ill or medicated participant

Participants will be recorded by technicians and results stored anonymously for traitement