Gaining weight can be important in some situations, such as if someone is underweight or wants to increase their muscle mass. However, it is important to do it in a healthy and balanced way. Here are some ways to get started on healthy weight gain:

Consume more calorie foods: Make sure you consume more calories than you burn each day. Focus on foods that are rich in nutrients, including carbohydrates, protein and healthy fats.
Choose nutrient-dense foods: Choose foods that are high in nutrients such as fruits, vegetables, whole grains, meat, fish, nuts and dairy products. Avoid processed foods and fast foods that have low nutritional value.
Larger meals: Eat larger portions or add a few snacks between your main meals. If you have trouble eating large portions, consider increasing the frequency of your meals.
Focus on protein: Protein is very important in building muscle mass. Make sure you are consuming enough protein each day from sources such as meat, fish, eggs, dairy products, nuts and soy.
Strength training: Doing strength training such as lifting weights or resistance training can help increase your muscle mass. These exercises will stimulate muscle growth and help you gain healthy weight.
Drink enough water: Stay hydrated by drinking enough water every day. Water helps in digestion, nutrient absorption and optimal body function.
Consult a nutritionist: If you have any health problems or have certain concerns, it is better to consult a nutritionist or doctor before starting a weight gain program.
Keep in mind that healthy weight gain is a process that takes time. It is important to establish healthy eating habits and engage in proper physical exercise. Always put your health first and consult a healthcare professional if you have any questions or concerns.
To improve and lengthen the body well, here are some things you can do:
Eat a healthy diet: Eat a balanced diet rich in nutrients, including protein, carbohydrates, healthy fats, vitamins and minerals. Make sure you get enough of the calories and nutrients needed for optimal growth and development.
Consume foods rich in calcium: Calcium is an essential nutrient in the formation of strong bones. Eat foods such as milk, yogurt, cheese and green leafy vegetables that are high in calcium.
Do stretching exercises: Regularly doing stretching exercises can help improve flexibility and posture. This exercise can also help stretch your spine and improve your posture, which can make you appear taller.
Do strength training: Doing strength training, such as lifting weights or other strenuous exercise, can help strengthen muscles and bones. This exercise can also stimulate the production of growth hormone which can affect the growth and development of the body.
Make sure you maintain good posture when standing, sitting and walking. Avoid slouching or arching your back.
Adequate sleep: Adequate sleep is an important part in the growth and development of the body. Make sure you get quality sleep and get enough rest each night.
Avoid factors that can inhibit growth: Several factors such as smoking, alcohol, excessive stress, and malnutrition can inhibit the growth and development of the body. Avoid these factors and prioritize a healthy lifestyle.
Please remember that genetics also plays a role in a person's height, and not everyone has the potential to be very tall. It's important to accept yourself and stay focused on your overall health rather than just your height. If you have further concerns or questions, it is advisable to consult a doctor or health professional.