This can be interpreted in one of two ways:
Just one pound of weight loss can unload 4 pounds of joint stress in a person who is overweight and/or has osteoarthritis. Take care of the bones that hold your body up. This means the muscles surrounding those bones needs to also be in excellent condition. The more joint stress your body maintains, the more likely the aches, pains, chances for injury, and early onset arthritis conditions are bound to set in.
Stress leads to weight gain. If you possess emotional stress, you may tend to eat more than you should. In addition, if you are not exercising daily, the food you are eating (in hopes to ‘satisfy’ your emotional state) may add up to an excessive calorie overload. The more calories consumed and the less calories expended = instant weight gain.