It's not uncommon for people to keep getting taller after 18, especially males.At 18 I was 6' 2" 185.Was" is the operative word. Like when he was in college. People tend to get significantly shorter in old age for a variety of physiological reasons.
Now at 59, I'm 6' 3" 185 . (My weight over the years has ranged from 161 to 221, but I can't explain how I grew an inch taller) Maybe my posture has improved or something, not too much heavy lifting , that sort of thing.
Don't tell the FDA...they may want to study me in a lab in New Mexico....View attachment 431659