Un guerrier expérimenté sait qu'une bataille peut durer plusieurs heures et qu'il faut utiliser ses forces de manière avisée. Cette Étude permet de réduire la perte d'Endurance du Héros.
| Niveau | Nourriture | Bois | Fer | Pierre | Argent | Or | Temporels | Conditions | Perte d'Endurance du Héros réduite | Pouvoir | Expérience du Héros |
| 1 | 3K | 1.5K | 0 | 1.5K | 3.75K | 340 | 00h 30m 00s | 0.25% | 190 | 3.2K | |
| 2 | 7.65K | 3.85K | 0 | 3.85K | 9.3K | 540 | 02h 30m 00s | 0.75% | 470 | 4.8K | |
| 3 | 19.5K | 9.65K | 0 | 9.65K | 23.5K | 920 | 06h 30m 00s | 1.5% | 1.2K | 7.2K | |
| 4 | 49K | 24.5K | 0 | 24.5K | 57.5K | 1.9K | 18h 00m 00s | 2.5% | 2.95K | 11K | |
| 5 | 125K | 62K | 0 | 62K | 145K | 3.75K | 1d 18h 00m 00s | 3.75% | 7.35K | 16.5K | |
| 6 | 315K | 160K | 0 | 160K | 355K | 7.8K | 4d 03h 00m 00s | 5.25% | 18.5K | 24K | |
| 7 | 800K | 400K | 0 | 400K | 875K | 19.5K | 1w 4d 00h 00m 00s | 7% | 46K | 36K | |
| 8 | 2.05M | 1.05M | 0 | 1.05M | 2.2M | 42.5K | 3w 5d 00h 00m 00s | 9% | 115K | 54K | |
| 9 | 5.15M | 2.6M | 0 | 2.6M | 5.4M | 98K | 9w 1d 00h 00m 00s | 11.25% | 290K | 80.5K | |
| 10 | 13M | 6.5M | 0 | 6.5M | 13.5M | 230K | 22w 5d 00h 00m 00s | 13.75% | 720K | 120K | |
| 21.52M | 10.81M | 10.81M | 22.57M | 405.25K | 38w 1d 00h 30m 00s | 13,75% | 1.2M | 357.2K |
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