The Brazilian believes it's fundamental for stoppers to be 100 per cent locked in for the entire 90 minutes and prepare for every eventuality.
Such an approach has seen the 27-year-old pick up a host of individual accolades - including the The Best FIFA Men’s Goalkeeper for 2019 - and become a Champions League winner.
"Over and above the technical and physical requirements, in which I think I have a high level, for me the most important thing is the mental side," Alisson told FIFA.
"It’s essential for a keeper to be focussed throughout the match.