Well, they would be a nervous wreck too if their body behaved like a three ring circus. Something is constantly going on in one area or another of our bodies and there is nothing we can do about it. Men only have two crisis in life, puberty and 40. We never get a break. I would welcome just a mid-life crisis.
Maturity is the first little crisis.
Everything is blossoming and growing to make us look like our mother before she had us. We can no longer fit into anything we wore the week before. Everything is either to short to tight or too babyish for our coming of age. The first time we have a good cry with our mothers, for the next 40, we cry by ourselves, PMS is Pretty Mean Spirited stuff that was was given to naive women to encourage them to get pregnant before they realized that state was only worse. As if that's not enough, we gain about 200 pounds of water and have bouts of hysteria.