The best way to gain weight as soon as possible in 2019
The only healthy weight gain formula that actually works.
Although being lean can often be healthy, being underweight can be a concern if it’s the result of poor nutrition or if you have other health concerns. So, if you’re underweight, these few steps can help you gain some healthy weight.
Here are some healthy ways to gain weight
Eat more and healthy

If you are underweight, you might feel full faster. You should eat 5-6 medium size meals, instead of 2-3 heavy meals.
Eat more calories than you burn. Your last meal should be before 30 mins of bed time.
Make sure you eat healthy food. The best way to rack up extra nutrition without having to eat huge quantities of food or resort to junk is to choose nutrient-rich foods that pack a lot of carbohydrates, protein, or fat into a small serving.
Healthy diet for men and women to gain weight

As part of an overall healthy diet, choose whole-grain breads, pastas and cereals; fruits and vegetables; dairy products; lean protein sources; and nuts and seeds.
Don’t fill up on diet soda, coffee and other drinks with few calories and little nutritional value. Instead, drink smoothies or healthy shakes made with milk and fresh or frozen fruit, and sprinkle in some ground flax seed. In some cases, a liquid meal replacement may be recommended.
Be friendly with healthy snacks

Snack on nuts, peanut butter, cheese, dried fruits and avocados. Have a bedtime snack, such as a peanut butter and jelly sandwich, or a wrap sandwich with avocado, sliced vegetables, and lean meat or cheese.
Exercises that actually helps you to gain healthy weight.

Exercise, especially strength training, can help you gain weight by building up your muscles. Exercise may also stimulate your appetite. You should avoid cardio or only do it 10 mins.
Eat More Protein

Blending your food in liquid form makes it digest more quickly than solid food. The blending acts like pre-digestion by breaking down the food for you. You don’t feel full as long and can eat again more quickly. It’s therefore easier to gain weight if you get some of your calories in liquid form.
There are plenty of protein powders and mass gainers which can boost your process of gaining weight. Below is the list of some good supplements.
It is important to workout while using weight gainers. Even if its for 15 minutes.
Now last but not the least, you must have a mindset of gaining healthy weight and make these tips your lifestyle.