I'd like to share a cooling pranayama - Shitali (though a rolled tongue) or Shitkari (though the teeth)
Since it's breathing in through the mouth...
- practise gently
- stop if it makes you feel dizzy
- avoid if the air is very polluted
- avoid if you have sensitive teeth/sinus issues
Aim for 6-10 breaths and see how you feel
Let me know what you think...