Mark was a patient in ICU for 3 weeks where he was placed in a medically induced coma, during his time in ICU he experienced ICU delirium. After ICU he experienced ICU acquired weakness, depression, anxiety and PTSD. Following his time in ICU Mark has became a advocate for better ICU and delirium care speaking or chairing sessions at various conferences or webinars on these topics. During the COVID pandemic he has started an ICU based podcast ICU life and recovery to increase awareness and understanding on life in ICU with guests from a range of ICU based professions.