When I have PMT I definitely hold more anger than usual. I think that's pretty common.
I think we should be using this more as I feel like women tend to me more passive than men. Maybe we should consciously use that time to confront things and/or make changes in our life.
Like...confronting the issues in my relationship.
Saying my mind when MIL is rude.
Standing up to my boss.
Basically any situation that has the risk of being passive.
Maybe this is the reason for PMT to help women be assertive/ get things out so that they don't build up for longer than a month.