HI, thanks for using healthcare magic It is sometimes difficult to start exercising but exercise is important not just for weight loss but it helps to improve heart function and also helps with a number of other areas of the body. There are medications that would help with weight loss but they still would not have the same effects of exercise. You should choose a format that best suits you eg dancing, walking, a sport, swimming, exercise videos , a trainer etc Joint pain can be related to different causes such as arthritis, trauma. It may be best to see your doctor for assessment. I hope this helps