I'm totally wiped out with the heat
I've spent the afternoon on bed with a splitting headache feeling like I do when I have heatstroke. I drink plenty of fluids and wear a hat etc. I don't stay in full sun, but it still gets me.
Ds2 is the same, but ds1 and dh just potter on as normal 
I see people out and about quite happy, whereas I'm knackered, sweating and trying to find drinks and paracetamol.
I'm happy that the weather's nice, but wish I could cope better.