Thin and skinny people are often obsessed to gain weight and also build their muscles.
Weight gaining is always associated with increase in body fats which might make you look bulky.
The dual goals of gaining weight and also your muscles can be achieved through a balanced combination of healthy diet and weight training exercises.
Few important tips to gain weight and build your muscles naturally are as follows:

1. Only consuming protein supplements in large amount will neither increase your weight nor your muscles.
   You should have a proper allied weight training program to put on more muscles.
   
2. To gain more weight you need to consume more calories, and to increase your muscles you need proteins.
   Hence you should take more calories from protein-rich food items to gain muscles.
   Try to choose food items which are low in fats but high in proteins to avoid excess fats.
   
3. Proteins available from animal sources like meat, fish, eggs, milk etc are complete proteins i.
   e.
   , they contain all the amino acids necessary for muscle synthesis.
   
4. Weight gain is also accompanied with increase in body fats.
   You cannot avoid this fat increase but you can minimize it by having regular exercises and developing muscles instead of fats.
   
5. Exercises are of vital importance to gaining muscles.
   When you exercise, there is breakdown of your body proteins and release of amino acids.
   These acids are then reused to build new muscles at a later time.
   The process of building new muscles rapidly increases after you exercise.
   Hence protein rich diet after exercises is of vital importance to gain muscles naturally.
   
6. Some supplements like creatine may make your muscles look grown.
   But remember that this muscle gain is temporary and will vanish once you stop the usage of these supplements.
   
7. Muscles and weight growth naturally by consuming natural food items and regular exercises will remain steady for a longer time.
   
8. Simple exercises like aerobics will not be fruitful to gain weight and muscles.
   You should opt for weight training exercises and those involving weight lifting, to have healthy weight gain through increase in muscle size.
   Free weight exercises involving dumbbells along with exercises done using resistance machines can help you gain muscles easily.
   
9. You should take necessary rest and sleep for at least 6 to 8 hours .
   Stress can also be a factor hindering your weight gain.
   
10. Eat a balanced diet composed of naturally available foodstuffs to gain necessary calories, proteins and also other vital minerals and vitamins which are equally important to assist weight gain process.
    

Muscle and weight gained through consuming natural food items and strength training exercises will remain constant for longer years.
Select your food items so as to gain enough calories, proteins and fats.
Simple exercises will not work; you should switch to intense workouts to gain muscles and weight in a healthy way.