It should come as no surprise that morbidly obese adults are almost completely sedentary:
Morbidly obese adults [BMI 40+] are sedentary for more than 99 percent of the day, getting only a fraction of the amount of walking that experts recommend for staying healthy, a small study suggests.The study of 10 men and women found that participants spent an average of 23 hours and 52 minutes sleeping, lying down or sitting each day. They typically took about 3,700 steps throughout the day — compared with the 10,000 steps that experts recommend for healthy living.
The average person does not log 10,000 steps per day either. Men average over 7,000, women over 5,000.