Physical activity can make a person tougher, improve the efficiency of their brain and other organs, regulate their sleep, help them achieve the ideal shape, and slow down the aging process. However, many beginners and even advanced gym visitors sometimes have unpleasant symptoms that occur due to an increase in physical activity. You should be ready for them in advance.

We at Bright Side have collected 12 of the most common side effects of workouts and prepared some recommendations on how to get rid of them.

Any physical activity, especially if you are overweight or have any serious medical conditions, should be started only under the supervision of an experienced coach and a doctor. You must also pay attention to any changes in how you feel. If you are worried about your condition, don’t try to treat yourself — go and see a specialist.