Summers off- do I need to function?

I am a teacher so I have my summers off. I am 7 weeks and I live in the south... it’s hot. I am usually VERY active and never stop but 6 weeks hit and I feel like I’ve been hit by a bus. Being hot makes me feel sick (I usually love the heat), I have zero energy, and I just don’t feel like myself. Can any other ladies who are teachers or don’t work during summer let me know what they did during this time? Do I just need to suck it up or is it perfectly fine to lay around? Or u can give me ideas of what u did during this time! Thank you!