Need To Gain Weight
There are certain types of people that have an actual need to gain weight. These people are those that are too thin to be healthy. These generally fall into the category of the sickly thin and tend to resemble toothpicks more than human beings. Having such a small muscle mass can make them susceptible to illness, or to depression based on their low weight giving them low self esteem. If you are one of those, you want to gain weight steadily due to a good healthy diet in order to improve your looks, keep you healthy, and give you strength and energy.
Body Mass Index (BMI)
Your body mass index, also known as BMI, is a measure of your weight versus your height. You want to be within 20-25 BMI. This is considered healthy. Don't know what your BMI is? You can go to here This will give a BMI. If you are concerned about your weight or the weight of one of your children, you should go to a doctor to have them determine if something is wrong with their body that is causing them to not gain weight.
Healthy Weight Gain
Healthy weight gain is done by gaining a little weight at a time, not by bulking up all at once. If you want to gain weight healthily, then you should gain by eating more protein, eating 5 or 6 meals a day, and doing a sort of body building routine, like lifting weights. Aerobic exercise is not a good idea because it will cause you to lose weight and mass. You can try protein shakes like ones that have creatine or glutamine in them to increase your mass. This will bring you up to a more healthy weight for your height.
Bad Weight Gain
Eating a bunch of sugars and fat like those found in candy is not a healthy way of gaining weight. These will cause you to be even more unhealthy than you already are and make you feel tired and sickly. This is very bad and could create an even worse problem than you already have.
If you are wanting to gain weight quickly for some reason and are thinking of doing it in an unhealthy manner, remember that this can cause you to die younger and will reduce your overall health very dramatically. Before you do it, please consider the harm you are causing your body, and the amount of physical strain it will go through.