When you exercise, the cells in your brain (and the rest of your body) start firing, becoming more energized. You also produce more serotonin and dopamineâboth crucial in mood elevation. Some credit these chemicals with whatâs known as the ârunnerâs highâ, common in endurance athletes. But we do know they make you feel good, and a sense of wellbeing and happiness can increase your physical health in turn.
You're most likely to get mononucleosis with all the signs and symptoms if you're an adolescent or young adult. Young children usually have few symptoms, and the infection often goes unrecognized. If you have mononucleosis, it's important to be careful of certain complications such as an enlarged spleen.
Some people have mild symptoms, while others can experience more serious symptoms. Early signs and symptoms of mono may begin several days before the more common symptoms of the illness appear. Some of these early symptoms can include: 1  Lack of energy. 2  Body aches. 3  Chills.  Loss of appetite.