President Joe Biden, in his only exit interview with a print publication before his administration ends in two weeks, was candid about the constraints his physical limitations could have placed on a second term had he been reelected.

Despite continuing to insist he would have won last year’s election against President-elect Donald Trump, who will be inaugurated on Jan. 20, Biden conceded during his sit-down with USA Today, “Who knows what I’m going to be when I’m 86 years old?”