1. Periods in the summer
  2. Shaving
  3. That our eggs wither away and decisions have to be made around that fact.
    Suggested by @Grosstastic
  4. Wearing a bra
  5. Buying a bra
  6. Competitive group exercise classmates
  7. Glass ceiling
  8. Internet trolls
  9. Manspreaders (specifically an issue for women who ride NYC public transportation)
  10. Scales
  11. Juicing
  12. Periods. Period.