Answer:
I would say just look up the significance of those numbers, and maybe that can help you understand why this is happening to you. Honestly, if they don't stop I would recommend that you see a because they might be able to tell you what is happening to you if you can't figure it out by yourself.
Explanation:
I hope this helps.
I would say there would be a need to cool down because when your swimming u have to cool down or else your lungs won't be able to take in enough air