If you gain weight quickly you will have fat problems. And if you lose weight too quickly you will suffer anorexia before you have a chance to gain the average weight. And that is the truth.
sometimes when you gain weight so quickly. you get a tingling sensation in your legs. you kinda turn into a human mermaid and you become quite constipated.
because its unhealthy
A diet of carbs and fats will gain weight quickly. Bread, ice-cream, vegetables like potatoes and carrots will all help someone gain weight quickly. Also fruits are high in sugars and can be consumed to gain weight.
Consume lots of water durhead!
You can by taking protein powder which creates fat that quickly turns into muscle, which creates more weight. Working out in general will help you gain weight as you are building muscle.
Yes, but you'll gain the weight back faster than you put it on.
Not sure but you should give them satin balls look it up it will make your dog gain weight fast!
Possibly, but you'll gain the weight back more quickly.
hormones.
You can't, it's not healthy. You might gain a little bit of water weight if you drink a little more, but you can't gain weight that quickly.
I'm guessing the same way humans do...EATING.