Usually men observe vrats and do puja AND MANY INTERESTING ONES BUT THEN IT WILL TAKE LOT OF TIME AND SPACE TO GIVE ALL THAT.for the benefit of family to keep away vighns and for the gereral benefit of all and women supposed to do for husband 😆 and his long life etc there are some which are done by both but according to hindu tradition it is believed that even if the woman does not do puja she shares half the benefit (punya) of the husband's prayers and alternately the husband also responsible for half the paap done by his wife.