Had viral pneumonia twice.... I remember I lost alot of weight and endurance. Also I had no appetite only making me sicker. This is no little cold bro. The first time it took me a damn near month to get out of bed. Felt like shit for close to 2 months. Mainly because I had no appetite.... Second time I forced myself to eat no matter how sick I was. 2 tbsp peanut butter, cup of oatmeal, liquid egg whites, protein powder, blueberries all in a blender. Three times a day. Made a big difference in my opinion.