Strength training should not be done when you have a cold, because in the process of the cold, the body has an uncomfortable reaction, such as gastrointestinal discomfort, forcing to do strength training is likely to increase this discomfort. If you have a fever when you have a cold, your body can also have significant weakness, and is not suitable for strength training. Before doing strength training, it is important to be in a better condition, and having a cold is not a good condition. If you force yourself to do strength training when you have a cold, there is a possibility that the symptoms of the cold will worsen and even complications of the cold will occur. There are some cold viruses that can cause inflammation of the liver and even myocarditis after attacking the body, and if you forcefully do strength training at this time, the damage to the heart and liver can be multiplied and amplified, and can even lead to myocarditis and inflammation of the liver. So when you have a cold, you can’t do strength training, you must wait until the cold is completely healed before you can do it.