Physical fitness has many benefits, which we learned about in the unit. Can you think of any disadvantages or negative consequences to working on your physical fitness? List and briefly explain two possible negative side effects that could happen when you're being physically active.

Possible negative side effects: muscle cramps/twitching, allergies, upset stomach, itchy skin, runny nose, etc

Explanation:

Physical exercise enhances the resistance, the functioning of the brain, enhances the heart function, regulates sleep and slows down aging. However, there are situations where an increase in physical activity has been associated with different symptoms/side effects such as, for example, muscle twitching and nasal stuffiness. Muscle twitching is caused by muscle exhaustion and an imbalance of electrolytes. Muscle twitching is a problem that can be solved by drinking cool water during training sessions in order to replenish electrolytes. Moreover, nasal stuffiness may be caused by the inflammation of the blood vessels in the sinuses, and this problem often is solved by training in air-conditioned gyms. These negative side effects and those cited above should take into consideration at the moment of making physical activities and consequently they should be consulted with the doctor at the right time.