The training screen grants one free hit per hour. It spends no energy and awards experience equal to your current hit damage.

In real battles you can use the free hourly right or an energy-powered hit. Which mode is available and any rejection reason are shown on the battle screen.

A short cooldown applies between hits, and work, training and war hits share a rolling 24-hour action budget. An action with an uncertain result can safely be retried with the same request id; a retry never produces a second hit.