Answer:
Because if you have a problem while swimming (like a cramp , for example), you will not be able to get out of the water alone and will drown.
Step-by-step explanation:
Swimming is an excellent physical activity. It promotes fitness, improves circulation, improves cardiovascular health, and is a low impact exercise for the joints. However, you should take many precautions when swimming, especially when swimming outdoors. There are several guidelines on what you need to do when swimming to ensure your safety, one of the most important, however, is not to go swimming alone.
Give preference to swim in pairs or in groups. If not, ask someone to accompany you by kayaking or walking along the beach, because you may have trouble swimming (cramping, hitting a rock, being attacked by an animal, for example) and unable to get out of the water. Water. If alone, it will drown.