August doubles are the hardest stretch of the year to stay ahead of sweat. Football camp, cross country preseason, band camp: two sessions a day, in the hottest month, often in gear that traps heat. The athletes who handle it best treat fluid and sodium like part of the schedule, planned the same way reps and mileage are.
Why doubles hit harder
A hard practice in August heat can cost more than a liter of sweat per hour. After a normal single session you have the rest of the day to eat, drink, and recover. Doubles cut that window to a few hours, then ask you to do it all again.
Losses also stack across the week. Sweat carries sodium out along with the water, and the amount varies a lot from athlete to athlete. If Monday leaves you a little behind and Tuesday starts before you catch up, day two begins where day one ended. By midweek, athletes who have been drinking only plain water often feel flat: heavy legs, low energy, sessions that feel harder than the schedule says they should.
Two quick reference points. The sodium loss calculator gives a working estimate of your losses from sweat rate and session length. And if you finish practice with white crust on a dark shirt or hat, you probably lose more sodium than most; here is how to tell.
The between-sessions window
What happens between the morning and afternoon sessions decides how the second one feels. Three habits cover most of it.
- Make weigh-ins routine. Weigh before and after the morning session in dry clothes. The difference is almost all sweat. A pound of loss is roughly 16 ounces of fluid to replace, sipped over the break instead of chugged at once.
- Pair sodium with the fluid. Plain water puts the volume back. The sodium that left with it has to come from somewhere too, either salty food or a mixed electrolyte drink, so the afternoon session starts closer to even.
- Eating counts. A real lunch does more than most drinks. Salted food, fruit, and something with carbohydrate cover fluid, sodium, and potassium at the same time. Skipping lunch to nap in the air conditioning is the most common between-sessions mistake.
A simple routine
- Before the morning session: drink about 16 ounces with breakfast. If yesterday ran long or you know you sweat heavily, make it an electrolyte drink. More on timing in Electrolyte timing: before, during, and after exercise.
- Between sessions: weigh in, then work back what you lost over the break. Fluid steadily, sodium from lunch or a mixed drink, and ease off big volumes in the last half hour so you are not sloshing at kickoff.
- Evening: dinner, then normal drinking to thirst. Pale yellow urine by bedtime is a reasonable sign you have caught up. If it is still dark, keep a glass of water going before bed so tomorrow does not start behind.
For teen athletes the same principles apply: meals first, steady fluids through the day, and sodium replacement scaled to how much they actually sweat. This guide stays general on amounts on purpose. An athletic trainer or family doctor is the right resource for anything specific to one athlete.
When plain water is enough
Walkthroughs, film days, light lifts, and short cool-morning runs are covered by water and normal meals. If a session ends without much sweat on your shirt, water is fine, and adding electrolytes on top of a salty diet does nothing extra for you. The full breakdown is in Water vs electrolytes: when plain water stops being enough.
How Saltivate fits
Saltivate is built for this kind of sweat replacement: 800 mg of sodium, 240 mg of potassium, and 60 mg of magnesium per serving, zero sugar, sweetened with Reb M. The potassium is potassium citrate, which is nearly tasteless, so a stick mixed between sessions tastes clean instead of bitter.
Stick packs live well in a practice bag. Tear one into a water bottle during the break and it is mixed before you find shade. For coaches and parents, they are easy to hand out and work in any bottle on the sideline.
Raw Unflavored is the flexible option for camp. It is plain and tastes salty, about two grams of salt per serving, so it disappears into whatever is around: lemonade at lunch, a smoothie, even food. Start with less and adjust to taste. More ideas in Ways to use Raw Unflavored beyond water.
Saltivate is also HSA/FSA eligible, paid directly with the card at checkout, no letter of medical necessity. Set the routine on day one of camp and hold it. The second week is where it pays off.
