Calculating your sweat rate is simple: weigh yourself nude before and after a one-hour training session at race intensity, track fluid intake during that hour, and use the formula (pre-weight – post-weight + fluid consumed) to determine hourly fluid loss in ounces or milliliters.
Inside the four-window hydration playbook that gets NHL players through Stanley Cup hockey — and how beer-league skaters and youth-tournament parents can borrow it.
Sugar-free sports drinks effectively replenish electrolytes during recovery or short sessions under 60 minutes, but they omit the carbohydrate fuel required to sustain glycogen stores during endurance or high-intensity efforts lasting longer than an hour.
Research shows endurance athletes need 300-600 mg of sodium per hour during moderate-intensity exercise, scaling to 600-1200 mg/hour in heat or for heavy sweaters. Individual sweat rate testing reveals your exact needs.
A 72-hour race-day hydration plan for athletes racing the Bolder Boulder 10K or any event above 5,000 feet — covering altitude diuresis, sodium math, and the post-race plasma-volume window.
The best hydration tablets for runners deliver 300–500 mg sodium per serving, dissolve quickly, and match your training intensity—tempo runs and races demand higher electrolyte loads than easy recovery miles.
IndyCar drivers can lose 8-12 pounds of sweat in a single race in 122F cockpit heat. Here is what the first-ever pro-driver sweat study says about race-day hydration, and what runners, cyclists, and golfers can steal from it this Memorial Day weekend.
For exercise under 60 minutes, water hydrates adequately. Beyond that threshold, sports drinks outperform water by replacing the 500-1,000 mg of sodium lost per liter of sweat—driving faster rehydration and better fluid retention during and after training.
Memorial Day weekend stacks more hydration challenges into 72 hours than most athletes face all month. Here’s the playbook for the BOLDERBoulder 10K, the lake-day BBQ, the round of golf, and the Tuesday-morning repair window.
The best electrolyte tablets for runners deliver 300-500mg sodium per serving, dissolve quickly, and support sweat-rate-matched replacement during runs lasting 60+ minutes. Nuun Sport, LMNT Recharge, and SaltStick Fastchews lead the category for different run distances and sweat profiles.