All detainees have the right to a minimum of one hour outdoor exercise per day. This is crucial for their mental and physical well-being. Suitable facilities should be provided, which are large enough, safe and properly equipped, in order to provide the opportunity for genuine exercise and recreation. There should be no disincentives to outdoor exercise for detainees, such as a lack of shelter from weather, corruption and a failure to ensure the safety of detainees. The prison authorities should ensure all detainees have access to time outdoors, including those under segregation or punishment and detainees in situations of vulnerability.