"These days" do not have to exclude you from social life. However, to take care of your health, you must avoid certain activities and procedures during your period. Be sure to find out what not to do.
The main difference between grass-fed beef and regular beef comes down to the diet of the cow itself. Grassfed cows, also called grass-finished or pasture-raised cattle, are grass-fed their entire lives and never subjected to finishing on grain in feedlots.