How do thin people make a nutrition plan to keep fit and gain muscle?

You can get a strong figure through a reasonable diet combined with scientific exercise.

① Diet: Most thin people have fast metabolism, especially basal metabolism. Thin people need to eat more food than they consume to gain muscle, so diet is a big problem. So eat more.

② Fitness Exercise: Make a good fitness plan and keep a good fitness record. The goal should be clear and the plan should be specific and comprehensive.