Does the subject want to ask, "What should I do to lose weight at the age of 39?" Adjust diet and increase exercise intensity.

1. Adjust your diet: Re-examine your diet structure to ensure that you get enough protein, healthy fat and high-fiber carbohydrates.

2. Increase the intensity of exercise: the current exercise plan has not achieved the expected weight loss effect, so you can consider increasing the intensity of exercise or new forms of exercise.