Drink 8 oz of water 2 hours before exercise (including short/easy sessions).
On more mellow training days, preload (and/or recover) with Skratch Labs Sport Hydration or Skratch Labs Wellness Hydration 2 hours prior to training.
If you suspect you are dehydrated (statistically speaking, you probably are) - AND if you are going to have a long, hard, hot session - try Skratch Labs Hyper Hydration or equivalent 1-2 hours before exercise, paired with lots of water!
Hydration begins 2-3 days before a big event, especially if you are traveling.
If tapering or leading up to an event, stay hydrated with water at rest and sports drinks while exercising. Remember, salt and potassium come from food too! Wait to supplement these electrolytes until a couple hours before a race or event.
If you have an early event the next day, preload with Skratch Labs Wellness Hydration or Skratch Labs Hyper Hydration the night before.
All of the above can maximize your performance, heart and vascular function, and body temperature in the right context! Play around, test it out, and see for yourself how it feels!