You experience a surge of adrenalin. You gain 1 additional maneuver at the start of your turn each round. Because Hastened has its effect at the start of your turn, you don't immediately gain actions if you become Hastened during your turn.
↳ Many effects that make you Hastened require you to use this extra maneuver only in certain ways. If you become Hastened from multiple sources, you can use the extra maneuver you've been granted for any single ability allowed by any of the effects that made you Hastened.