MARIENAIE study is a pilot study on the feasibility and appropriation of nocturnal naps by a team of paramedical caregivers alternating a 12-hour day/night work rhythm for a period of 1 year. To date no study on the impact of nap in ICU on a long period was published.

This study will also explore : the factors favouring or hindering the implementation of this strategy and its maintenance over time through a concomitant sociological qualitative study, the evolution over time of the parameters of perceived nocturnal sleepiness and the immediate impact of the realization of naps on this sleepiness and the evolution over time of the medium-term impact with the help of questionnaires exploring various dimensions concerning the working conditions and health (somatic health, stress, psychosocial risks, evaluation of the working environment).

Inclusion Criteria:

• Paramedic working 12 hours alternating day and night in the ICU department of the Vendee departmental hospital center.

Exclusion Criteria:

• Pregnant woman.
• Caregiver with knowledge of a scheduled departure from the ICU within 2 months after the start of the project.
• Caregiver refusing to participate in the project.