How Much Water Do Active Walkers Really Need?
Your actual hydration needs depend on body size, activity level, and environment. Active walkers need meaningfully more water than sedentary people due to sweat loss and elevated body temperature during exercise.
Daily Water Needs by Activity Level
| Activity Level | 60 kg | 70 kg | 80 kg | 90 kg |
|---|---|---|---|---|
| Sedentary | 2.0 L | 2.3 L | 2.6 L | 3.0 L |
| Light (5k steps) | 2.2 L | 2.5 L | 2.9 L | 3.3 L |
| Moderate (10k steps) | 2.5 L | 2.9 L | 3.3 L | 3.8 L |
| Active (15k+ steps) | 2.8 L | 3.3 L | 3.7 L | 4.2 L |
Drink 400–600 ml 1–2 hours before a long walk. During walks over 45 minutes, sip 150–250 ml every 15–20 minutes. After your walk, for each 0.5 kg of body weight lost during exercise, drink 500 ml to restore fluid balance.