[header] How to prepare to go swimming [title] Check the weather, planning accordingly. [step] If you know it is going to be hot and sunny, make sure you have sunscreen and water. If there is a chance of thunderstorms later on you can still go swimming. 
However, make sure you have a plan for inclement weather, such as shelter to get under, and that everyone you're with knows where to meet if you hear thunder. [title] Avoid large meals within an hour of swimming.