The male gender can be described from biological, psychological or social perspectives.

Biologically, man is defined by its chromosome set XY, as well as primary, secondary and tertiary sexual characteristics. Primary characteristics are testicles and penis which develop during fetal stage. Secondary characteristics are growth of beard, deep voice and increased body hair which develop in the course of puberty. Male hormones, the most important being testosterone, are responsible for the developments. [1] [2] [3]

The tertiary characteristics define gender-specific sociocultural and psychic changes, that is, „male" conduct, clothes or career choice.

In the past, a high testosterone level was associated with an increased propensity towards violence. However, modern research results prove this thesis wrong. Still, the effect of testosterone on the body hasn't been completely clarified yet. [4] [FEMALE PHYSIOLOGY]

In parallel to women's rights movements (feminism), there are also men's rights movements. Some support free sexuality and especially rights for homosexuals, others, however, wish for more traditional gender roles. The fact that the majority of mothers are preferred to fathers by the divorce court is conceived as unfair by many men. This is why they call for equal rights between men and women. [5] [6]