No that is impossible. You cannot gain muscle mass without ever gaining weight.
lift weights and gain muscle
You can gain weight without being noticed by not doing sports in school that year or do excercising. Sneak fatty foods into your room also, and eat them at night. Try to eat right before bed or take a nap right after because you body will store food in fat cells then. Eat a lot of dairy, grains, candy, and greasy foods to speed gaining.
no
Weight gain diets are designed for people who are very thin or have difficulty gaining weight. I have been put on a weight gain diet in the past without success. There is a site called thednadiet dot com that will provide you with information on the weight gain diet.
Weight training.
weight lifting. remember muscle weighs more than fat.
No Pain No Gain, well in this case, loss.
There is no way unless you gain weight.
Only with a court order.
It depends what you mean by side effects. However a balanced diet and proper exercise is the best way for a normal person to gain weight
It is a necessary biological response for a woman to gain weight during her pregnancy. The weight is added from fat that holds nutrients and water that both provide for and protect the baby. It is not possible to not gain weight during the pregnancy without harming the baby, but there are ways to lose the weight after the birth of the child.