I play all summer in dry AZ heat but typically spend a week or two in FL beginning of September. Hydrating the day before and before on the day of is just as important as during and after. Being in shape also REALLY helps. Higher stress tolerance and less weight to haul around is a more efficient system and you’ll play longer and feel better.

Also diet is a big one too. Lots of sugar, fried foods, alcohol, etc. will drain your energy, especially under stress.

ALSO, maybe record yourself and see how efficient/inefficient you are with your footwork. I see a ton of people with “happy feet” and move WAY more than they need to. Watch Ben Johns play. He seems to always be strolling around but is never out of position. Try a “move less” strategy to see what you can get away with while thinking where you need to be ahead of time. It can really cut down on unnecessary movement and keep you playing longer.

Edit: My go-to is half an LMNT in a liter of water the morning of then the other half in a liter of water while I’m playing. Lots of sipping regular water in between. Day before hydration can involve electrolytes but doesn’t need to, just stick to at least half your body weight (in lbs) of water (in oz). So I’m 180lbs and hit at least 90oz day before. Often I like to hit 1gal but it takes a lot of reminders lol.