Ask your physician what a safe amount of weight gain is for your age and gender. Gaining too much weight could put your body weight into an overweight category.
[header] How to gain weight and muscle [title] Meet with a doctor. [step] Before you begin a new workout regimen or try a drastically different diet, you need to meet with a doctor to discuss your health. [substeps] Talk to her about why you want to gain weight and muscle mass, and tell her about the kinds of things you're going to change in your lifestyle.