Women can make a man's exercise routine feel easier, for instance — but they can also cause them to show up late to the bus stop and do more dumb things on skateboards. This does not give men the right to blame EVERYTHING on women, but here is some scientific basis to show that women can have both positive and negative effects on men.
In the presence of ladies, men find running easier.
With women around, men take more risks.
Men donate more money in the presence of attractive women.
Men consume more calories when having meals with women.
Men also experience cognitive impairment when they have to interact with women.
The number of women around affects the way men manage their finances
Women cause their husbands to talk more