Nov 8, 2014 8:58am
“When you’re working out, you’re more likely to be losing water, both through your breath and through sweat,” says Renee Melton, MS, RD, LD, director of nutrition for Sensei, a developer of online and mobile weight loss
and nutrition programs. “If you start out dehydrated, you won’t get a good workout. You’ll get dizzy, lethargic, your muscles won’t work as well, you won’t feel as sharp mentally, and you’ll get cramps sooner.”
How Much Water Do You Need?
So how much water should you drink before, during, and after a workout? First, make sure you’re well hydrated to begin with. Drink fluids throughout the day before you exercise. Then follow this formula from Melton:
- One to two hours before your workout, drink 15 to 20 ounces of water
- 15 minutes before you begin, drink between 8 and 10 ounces of water
- During your workout, drink another 8 ounces every 15 minutes.
This is off WebMD