is their any best practices to gain weight if someone is very silimy?

One of the requirements you have to meet to become a military service member is the body composition test. If you weigh between 148 and 267 pounds as a male and 120 to 184 pounds as a female, then you are good to go. It is definitely not an easy task. But it is not impossible either. You can start by reading how to lose weight for the military here. Briefly, you will need to: understand your body and set your goals, create a diet plan and stick to it, and come up with a workout routine and commit to it

eat cheesy foods (not alot so you dont get obese) it worked for me during covid i was rly slim and i gained decent bit, not alot, not too less