From extensive medical research it has been demonstrated that both muscle weakness and obesity, independently have negative repercussions on physical function and mortality. To make matters worse approximately 10% of older adults over the age of 75 are afflicted with both risk factors, and in medical jargon this double whammy is called sarcopenic obesity. In this video, I review the dangers of this combination of risk factors. However, on a positive note, I also discuss the benefits of exercise as one important ingredient to help mitigate this problem.