The European Sleep Research Society (ESRS) organised with great success the 26th SLEEP EUROPE Congress, which was held on 27-30 September 2022, in Athens. The Congress, following the difficult period of a pandemic that barred international travel and prevented scientists from sharing their experience and progress in meetings in person, aimed to facilitate exchange of ideas and knowledge in a manner that promoted science and bonded further the scientific community by face to face interaction NTUA actively contributed with the following presentation :