Most men lie, even on this site. It's that simple.
5'9" - 5'10" guys will almost always lie and claim 5'11" or 6'0", sometimes even 6'1".
5'11" guys ALWAYS claim 6'0".
Often "tallfags" who claim to be 6'2"+ are actually 6'0" - 6'1" at best and often not even solid 6'0".
5'8" - 5'9" guys often claim 5'10" and so on.
A lot of this is because people don't understand how rounding works. If you're 5'10.5" before bed, you're not a solid 5'11". If you're 5'11.5" before bed, you're not a solid 6'0". Your true height is your evening height. I know this sounds autistic, but it's true. If you're 5'11.75" before bed, you can claim 6'0".
The same goes for metric. 176-179 guys claim 180cm+. 180cm guys claim 181-184cm and so on.
It's not always lying, either. Poorly done self-measurements, measuring in shoes, day/night discrepancies in height and often people don't even measure themselves, they just assume they're a certain height.
We get posts here from guys finding out they're significantly shorter or taller than they'd thought simply because they've never properly measured and just guessed their height.
Men lie about their height, both IRL and anonymously. Men also lie about their sex life. At least half of all virgins lie about their status, even on anonymous pol/surveys. Anyone here who believes virginity "statistics" are accurate is delusional.
According to statistics something like 25% of men aged 18-30 haven't had sex in 2018 and 5-10% are virgin or something like that. The real number is significantly higher. More than half of all young men in the western world haven't had non-escort sex this year. Almost half of all young men are virgins (escorts don't count.)
Women do the opposite. They lie about their number of sexual partners. They often don't count one night stands and they just lie in general. Many claim to be virgins because to many of them, anal, oral and even ONS don't count.