Hello, you always catch a cold when you exercise to lose weight. It may be because the landlord was originally in poor health, but now he is exercising too much, which leads to fatigue, decreased immunity and easy to catch a cold. My suggestions: First, reduce the amount of fitness, whether it is the length of a single time or the frequency of fitness every week. Second, supplement energy and nutrition to enhance your immunity, especially high-quality animal protein, such as beef, marine fish and eggs. Chen Bo, cb2969 wishes you good health.