In weather like this you need to drink a lot more water...you refer to symptoms of dehydration.
Water, can be flavored but no caffeine and no bubbles like fizz of soda...water.
No coffee or tea in excess, water.
I deal with the H&H by thinking cool thoughts and October is soon to be here...that for us is cool-down time.
Chores are done by 6:30 AM if I can. Horses are fed by this hour usually.
I mow the grass, tractor running by 7:00AM and I'm off cause it makes a slight breeze.
A hat is a must for me always as I burn badly, but covering your head with a baseball or shade-making hat helps cool you too.
Any outdoor work is for real done at my house by 9:00AM, time to go in...we will think about resuming it after 6:00PM if the worst of heat left and a breeze arose.
I can deal with heat, humidity makes me ill...so when humidity levels reach 70% or above I am a miserable person.
A/C is not
a luxury, it is
a necessity in Florida.
If the house not have central air every room sports a window unit.
Excellent insulation is a must as are insulted glass windows and tinted glass in house and vehicles to try to protect you from the sun.
My horses see me all day long through the kitchen widows that line my house back wall...
I see them too...
I touch them morning and night during the worst of heated days and they get hosed off every evening around 6:30...lord do their sweaty bodies stink...gross.
During the days of worst heat/humidity the horses don't even want to go graze...they eat and pour sweat off of them.
My guys today never left to go graze, they instead stayed home and ate the round roll of hay then came under the barn for shade to cool down...back they went to eat, back they came to cool...
Says something...a animal won't eat its to hot, you know its hot.
Riding, forget it.
Not me...not doing that to me nor my animals.
When I'm dripping wet just brushing them no way am I carrying out, forget saddling them in heavy saddle blanket and saddle to ride...it can wait.
I'm also not inviting a vet bill for heat issues to the horses either.
I wish it was only 90 degrees foxhunter.
We've been averaging 105 -110 heat index here, that is inhuman to demand any creature to endure forget work in for more than a few minutes.
Think cool thoughts and drink water, lots of water...cooled with ice cubes but not frigid.
Me, I like a twist of lemon or lime squeezed then dropped in my glass.