On average, the human body needs from 10 to 35% of their daily calories to come from protein foods.
That equals to about 40 to 60 grams per day.
Not getting enough protein will force your body to start breaking down muscle fiber to get access to amino acids it needs to synthesize new proteins, like antibodies and insulin.
In a survival situation, however, the chances are over time, if not during the crisis, your access to animal protein will be greatly reduced if not eliminated.
That means you have to know how to get access to alternative sources of protein, particularly if the survival situation you are facing will last more than a couple of days.
Which is why you need to commit to memory some of the natural, non-meat protein sources available; on the next page, we cover a few of them.