Yes, men and women do see colors differently, with males particularly struggling to identify certain shades of colors such as yellow or green.
Men beat the ladies when it comes to flatulence. Probably not something males are too proud of, but indeed they are a lot gassier. The reason, though, remains a mystery.
Men can develop a condition known as gynecomastia, where breast tissue actually grows. This can be due to hormonal issues.
Yes, male fetuses can have erections in the womb. These in-utero erections are apparently a way to keep the tissues oxygenated.
This might have something to do with increased sedentarism, changes in diet, getting older, and hormonal changes.
Men have their own version of menopause. The common adverse effects they experience are largely due to a drop in the level of just one hormone: testosterone.
Men are not as prone to yeast infections, but they can get one through sex with someone with an active infection, or as a result of poor hygiene.
Men secrete a pheromone called androstenone through both urine and sweat. This pheromone, which is secreted thanks to testosterone, smells differently to different people.
In general, men sweat more than women. This means that men's sweat glands release more sweat than women's at a given temperature.
This is indeed very rare, but can happen. For this to take place, a spike in the production of the hormone prolactin must occur.