How much you need
A general target for active people is about half your bodyweight in ounces per day, plus more on hard training days or in hot weather. A 180 pound lifter would aim for roughly 90 ounces (about 11 cups) as a baseline.
The quick check
- Pale yellow urine usually means you are hydrated.
- Dark yellow or amber means drink more.
- Clear urine all day can mean you are overdoing it — no need to force extra water beyond thirst and the guidance above.
Why mild dehydration hurts lifting
Losing as little as 2 percent of your bodyweight in fluid can measurably reduce strength and endurance in the gym. Dehydration also raises perceived effort, so sets feel harder than they should even if your muscles are not the limiting factor.
Simple habits
- Drink a glass of water with each meal.
- Keep a water bottle at your desk or in your bag and refill it through the day.
- Drink 16-20oz in the few hours before training.
- Add electrolytes (sodium especially) on long or sweaty training days.