Poor health and catching cold easily suggests eating some milk, concealed meat, etc. and taking appropriate vitamin supplements. Poor health and frequent colds may be related to low immunity of the body, so it is recommended to take protein supplements. Protein is essential for synthesizing antibodies, which are needed to fight against pathogens, especially viruses, when the body is sick. Milk and concealed meat contain a lot of high quality protein and calcium, which can supplement the body’s nutrition and help strengthen the body’s immunity. Vitamins are also needed. Vitamin deficiency may cause fatigue and poor resistance to illness. Fruits and vegetables are rich in vitamins, so it is recommended to eat them appropriately. Usually recommended to strengthen physical exercise, physical fitness, avoid staying up late, generally helpful to enhance immunity.