You can lose weight in the gym. You can use treadmills, bicycles and the like, but be clear. Anyone who exercises can grow muscles. It's just that these muscles grow slowly, but the muscle lines will look good and give people a feeling of seedlings. In terms of diet, don't overeat and don't eat high-calorie food often! With a bicycle, the calf will not be much stronger, but it will be linear afterwards. Visually more beautiful scenery. I hope my heart can help you.