The people I see that cite the risks of "over exercising" are exclusively people in bad shape. My sister in law, sedentary and textbook obese, insists that runn

The people I see that cite the risks of "over exercising" are exclusively people in bad shape. My sister in law, sedentary and textbook obese, insists that running is dangerous for anyone due to the "extra stress it puts on knees." It's just an excuse people use to convince themselves that they're doing the right thing by not moving much. I see it too with people not eating healthy foods like vegetables because they read somewhere that the pesticide residue or whatever is worse for you than just eating processed food all day.