Where can we get our Proteins from? (for people living a sedentary life)
Let's understand what protein is.
Look, protein is a building block for our body. It's job is to build. Build muscles, build tissue, build cells. It's essential for people who need this building - for example athletes (because their muscles are going through constant wear and tear) and kids (if their height is growing). But most adults are already fully built and don't need much protein. An average human being needs about 50 g of protein per day, which is easily met by eating vegetables, grains, greens, nuts, coconut, fruits. Excess of protein is a much bigger problem than not getting enough.
Look at some of the world’s strongest animals - Gorillas, buffaloes, elephants, ox - they never ask "Where will I get my protein from?" or "Where will I get my calcium from?". They simply eat their food - plants and grasses. Yet, they are much healthier than us and are not suffering from the hundreds of health problems that we humans are. So don't worry about these man manufactured terms like protein, calcium, etc.
Simply eat what Mother Nature has given, in its whole form, and Nature herself will take care of you.